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4297670 |
Metal foil resistor
A thin film foil resistor is disclosed wherein a thin metallic foil is bonded to an insulating substrate and a circuit path is formed on the foil by photographic artwork-etching techniques. After...
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4288776 |
Passivated thin-film hybrid circuits
Thin-film microcircuit structures passivated with silicon nitride are provided in which included electrical components containing nickel, chromium or other nitride-forming metals are encapsulated...
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4284970 |
Fabrication of film resistor circuits
A method of fabricating thin and thick film resistors which results in stable resistance characteristics, ability to withstand high current or voltage and a precise method of trimming small...
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4278725 |
Cermet resistor and method of making same
A cermet resistor element utilizing a silver-gold alloy to improve the contact resistance variations and the method of making the element are disclosed. A gold resinate and a silver resinate are...
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4278706 |
Method for making discrete electrical components
A matrix of discrete spaced electrical components (which may be individual components or networks, for example) in fixed array on a substrate wafer, each component being connected to terminal...
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4268954 |
Method of making non-inductive cylindrical thin film resistor
A thin film, cylindrical resistor is disclosed which exhibits non-inductive characteristics and which may be fabricated easily and economically. A cylindrical insulative substrate is provided with...
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4267634 |
Method for making a chip circuit component
The present method and device provides that a thickness of wet ceramic material is laid down and partially dried to provide a base. This step is followed by screen printing one or more patterns of...
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4253082 |
Resistance disk
A resistance disk that is so constructed that as the disk is rotated between a pair of fixed contact members, there is produced between the contacts a varying and random like resistance pattern of...
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4246467 |
Electric terminal for connecting a heating grid on a thermal window
This invention sets forth the details of an electrical terminal for connecting a heating grid on a thermal window to a source of electric power. In general, such terminals have at least one bonding...
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4241103 |
Method of manufacturing an integrated thermal printing head
A thermal printing head having a heating resistor prepared according to a thin-film technique and a wiring circuit prepared according to a thick-film technique achieves a high printing quality at a...
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4226899 |
Method for fabricating controlled TCR thin film resistors
High stability thin film resistors are made from an alloy comprising selected portions of nickel, chromium, and gold selected in a ratio to provide the desired temperature coefficient of resistance...
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4217570 |
Thin-film microcircuits adapted for laser trimming
Microcircuit structures including thin-film electrical components are provided with a multilayer passivation coating that permits laser trimming of the components through the coating without...
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4210996 |
Trimming method for resistance value of polycrystalline silicon resistors especially used as semiconductor integrated circuit resistors
Current having a density higher than a critical value is passed through a polycrystalline resistor doped with impurities at a concentration higher than a critical value to decreasingly correct the...
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4206541 |
Method of manufacturing thin film thermal print heads
A dielectric substrate for a thin film dot matrix thermal print head has its working surface etched or otherwise treated to selectively remove the dielectric material, in all areas which will...
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4201970 |
Method and apparatus for trimming resistors
A plurality of current paths, each operating a fusible link, is connected between a common first terminal and different points along a resistor whose value is to be trimmed. By applying a constant...
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4200502 |
Method for producing an electrical thin layer circuit
A method is disclosed for producing an electric thin layer circuit comprising at least one capacitor and a conductor path and/or a resistor. The number of masks required for the production of such...
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4194108 |
Thermal printing head and method of making same
A thermal printing head for printing alphanumeric characters on a thermally-responsive medium, the head being faced with a pattern of heat generating "dot" elements electrically insulated from one...
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4191938 |
Cermet resistor trimming method
A method for laser trimming of resistors which includes sputter depositing or vaporizing resistor material in a limited area but the resistor geometry and trimming location is designed to achieve a...
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4183136 |
Temperature sensing resistance device
A temperature sensitive thick film resistor unit for use in detecting and control systems is formed employing thick film plating technology. A final sized negative is formed from enlarged artwork...
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4184062 |
Laser resistance trimmer
This invention relates to an apparatus and method for adjusting the resistance value of an elongated resistance film of typically inconsistent density which has been deposited on an insulative...
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4173823 |
Resistance heater for a pizza carton
In the fabrication of a resistance heater for a carton for packaging a pizza, an aluminum metallized sheet is adhered to a paperboard panel, a generally U-shaped strip of arc-sprayed zinc is...
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4172249 |
Resistive electrical components
Improved resistive electrical components are disclosed comprising an insulating or insulated substrate, a resistive foil bonded to the substrate having photoetched therein a pair of terminal pads...
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4168568 |
Electrical resistor and method of making same
An electrical resistor comprising a base having a resistance element supported thereon. A pair of terminals for connecting the element into an electrical circuit are bonded to the resistance...
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4164067 |
Method of manufacturing electrical resistor element
A method of manufacturing a resistor element for fixed or variable resistors. The element comprises an insulating substrate injection molded from ceramic-glass frit material and organic binder and...
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4163315 |
Method for forming universal film resistors
A method for forming a film resistor for hybrid circuits trimmable from 0 ohms to infinite resistance, whereby resistive material is deposited over previously applied conductive material. One edge...
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4161431 |
Process for producing thin film resistor
A thin film resistor is produced by forming a film of tantalum pentoxide on part of a pattern of tantalum nitride, simultaneously forming an electroconductor and an electrode on other part, where...
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4160969 |
Transducer and method of making
A transducer is constructed by the deposition of conductive leads by thick film deposition techniques and the deposition of resistive material on the substrate by thin film deposition techniques in...
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4159459 |
Non-inductive cylindrical thin film resistor
A thin film, cylindrical resistor is disclosed which exhibits non-inductive characteristics and which may be fabricated easily and economically. A cylindrical insulative substrate is provided with...
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4159461 |
Resistor network having horizontal geometry
A film resistor network horizontal geometry having extended trim ratio and improved trimming and operating characteristics and method of using the same. The film resistor network comprises an...
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4157284 |
Process to obtain conductive and resistive elements in microwave microcircuits
A process for obtaining conductive and resistive elements in microwave circuits in which sequentially a layer of a thin film constituted by a high resistive material is deposited on an insulating...
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4151641 |
Methods of making an improved sensing element and an improved sensor assembly for a halogen gas leak detector
Methods are described for making an improved sensing element and an improved sensor assembly for a halogen gas leak detector. The method of making an improved sensing element includes positioning...
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4149064 |
Method and apparatus for adjusting electrical networks consisting of synthetic foils
A method and apparatus for adjusting an electrical characteristic of an electrical component of an electrical network which network comprises a stack of secured together foils or layers which...
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4146957 |
Thick film resistance thermometer
A folded, highly pure platinum, thick film, path on a ceramic cylindrical substrate provides a high TCR of about 3850 ppm/° C. The path is applied by screen printing a thick film paste onto a...
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4139833 |
Resistance temperature sensor
A polished ceramic substrate is provided with an insulation layer of silicon monoxide (SiO), over which a nickel metal thin-film is laid down in a spiral or serpentine pattern, taking up a...
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4132971 |
Noninductive film-type cylindrical resistor and method of making it
A highly stable noninductive film-type cylindrical resistor which can be economically mass-produced, with few rejects, even when the film is one having a very high resistance. This is accomplished...
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4117589 |
Method of manufacturing a hermetically sealed electronic component
A method of manufacturing a passive hermetically sealed electronic component having a coupling element of soft alloy material between the component element and the leads for providing strain...
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4104607 |
Zero temperature coefficient of resistance bi-film resistor
A first thin-film resistor member, preferably TaN, is disposed over a sec thin film member, such as NiCr, to completely cover the second member and act as a passivating layer preventing anodization...
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4102722 |
Method of making heated laminated window
A method of making transparent electroconductive window comprising an assembly element supporting a circuit portion electrically coupled to a novel self-soldering bus bar consisting essentially of...
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4100525 |
Single setting variable resistor
A variable resistor having an insulating substrate, a resistive film applied to the surface of the substrate and spaced terminals supported by the resistor and in electrical connection with the...
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4097988 |
Method of manufacturing thick-film resistors to precise electrical values
The resistance material of a thick-film resistor is applied to a substrate in a layer having a configuration that tapers in a direction transverse to the direction of flow of current and the...
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4098949 |
Metallizing compositions and the preparation of electrically conductive articles
Metallizing compositions suitable for the production of fired on electrically conductive films which do not adversely affect the overall strength of heat resistant substrates are described. The...
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4096627 |
Method of forming port hole coaxial connector
A coaxial connector is disclosed for simultaneous crimping of the center conductor and outer shield made possible by a port hole design of the connector allowing for visual inspection of the center...
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4087779 |
Printed circuit and method of making
An electronic printed circuit is produced by firstly forming an electric resistance layer on an insulating substrate at positions where resistors and conductive portions of the printed circuit are...
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4075452 |
Electroresistor and method of making same
A process for producing high precision electrical resistance elements and electrical resistance elements produced thereby are disclosed. The process includes the step of etching a masked metallic...
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4072921 |
Low inductance precision resistor deposited on an adhesive backing and wound on a bobbin
A precision resistor wherein the resistor wire is deposited in a sinuous pattern on the adhesive surface of a thin, flexible tape of electrical insulating material. In winding the tape onto a...
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4065743 |
Resistor material, resistor made therefrom and method of making the same
A vitreous enamel resistor material comprising a mixture of a vitreous glass frit and fine particles of a mixture of tin oxide (SnO 2 ) and tantalum oxide (Ta 2 O 5 ). An electrical resistor is...
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4053977 |
Method for etching thin foils by electrochemical machining to produce electrical resistance elements
A process for etching a thin film or foil of an electrically conductive resistive material, preferably an alloy predominantly comprising nickel and chromium, by electrolytic etching under...
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4040172 |
Method of manufacturing integral transducer assemblies employing built-in pressure limiting
A transducer of an "H" shaped cross section employs a depression relatively equal to the line width of a diffused piezoresistor located in said depression. The depression is sealed by means of a...
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4041440 |
Method of adjusting resistance of a thick-film thermistor
A functionally adjusted thick-film thermistor-resistor network having an accurately preselected electrical resistance and change of electrical resistance with temperature, and a method of forming...
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4032881 |
Resistance element with improved linearity and method of making the same
A highly accurate resistance element formed by depositing a plurality of conductive pads at spaced intervals along a substrate, depositing the resistance element in intimate electrical contact with...
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