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4689058 |
Disposable stove hood filter
A composite stove hood filter consists of a primary metal mesh filter and a nonwoven, secondary disposable filter. The secondary filter is a low basis weight (0.2 oz./yd. 2 to 1.0 oz./yd. 2 )...
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4687573 |
Sorbing apparatus
The disclosure describes a sorbing apparatus including at least one chamber having first and second ports and defining a fluid flow path between the first and second ports. The chamber includes a...
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4682992 |
Microbicidal coated beads
Organosilicon quaternary ammonias and other microbicidal compounds are bound to the surface of discrete inorganic particles such as glass spheres. Inorganic particles coated with the microbicidal...
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4680040 |
Multipurpose filtering material
A multipurpose filtering material particularly for use in electrostatographic reproducing apparatus has a foraminous support matrix having a plurality of interconnecting voids to permit low...
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4676904 |
Filter sheet which is free of asbestos
A filter sheet which is free of asbestos, and which contains cellulose, filtering aids such as diatomite, perlite, etc., and cationically modified material in the form of cellulose on which are...
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4671873 |
Filter element with permanently applied sealing strips
A filter element that includes a membrane which is to be detachably or non-detachably retained between fixed parts of a filter device, and which is provided on at least one of its sides with a...
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4668258 |
Gas filter
A gas filter suitable for an ostomy bag comprises a pad impregnated with a deodorizing agent (e.g., activated carbon) and made of any open cell plastic foam material which is laminated together...
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4666478 |
Scrubber apparatus for purifying foul air produced during an embalming, an autopsy or the like
An air scrubber apparatus which purifies foul air produced during an embalming, an autopsy or the like carried out on a work table disposed in a room. This scrubber apparatus comprises a housing...
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4664683 |
Self-supporting structures containing immobilized carbon particles and method for forming same
A process for immobilizing reactive Whetlerite carbon particles and forming a self-supporting structure of high compressive strength therefrom is described in which the self-supporting structure...
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4665050 |
Self-supporting structures containing immobilized inorganic sorbent particles and method for forming same
A self-supporting structure comprising an inorganic sorbent and method for preparing is described in which the self-supporting structure is substantially free of sorbent fines and the sorption...
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4655797 |
Fine screen and fine screen stack, their use and process for the manufacture of fine screens
A fine mesh screen is coated with at least one metal, by galvanic or chemical deposition. Metals of the platinum group are especially advantageous. The mesh width may be as small as 0.1 micron or...
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4652286 |
Exhaust gas filter
An exhaust gas filter for diesel particulates, comprising a row of a plurality of channels of honeycomb structure of porous sintered ceramic fiber composite sheet, the ceramic fiber composite sheet...
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4645605 |
Filtration with biogenetic silica
Disclosed is the filtration of fluids by utilizing porous biogenetic silica ash devoid of fiber alone or combined with additives. The biogenetic silica may be in particles or prilled or pelleted....
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4643182 |
Disposable protective mask
A protective mask formed from a porous non-woven sheet material which is made of glass fibers and a suitable binding agent, and which may optionally include a gas adsorbent substance. The mask...
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4631077 |
Foam plastic air filter
An air filter comprising a first layer of reticulated foam plastic material having a thickness of between 10 mm and 20 mm and a porosity of between 5 and 60 pores to the linear inch, a second layer...
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4626307 |
Machine and method for assembling pleated filter material and a hollow core member
An automatic assembly machine for assembling a pleated filter material and a perforate hollow core member includes a wrapping station, an adhesive application station and a clamping station. A...
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4608173 |
Filter
A filter of a nonwoven fabric capable of removing particles from a fluid has attached to the fibers of said fabric a polymeric substance having a functional group capable of adsorbing said...
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4604110 |
Filter element, filter, and method for removing odors from indoor air
An air filter element for removing odors from indoor air having a dry of a mixture of silica gel, activated carbon, and a zeolite. This dry mixture may also be impregnated with a liquid for...
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4604205 |
Water removing filter media
A filter media for use in a filter employed to separate water and particulate material from a liquid to be purified, such as a hydrocarbon fuel. The filter media includes a porous material such as...
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4600414 |
Apparatus for removing contaminants from heated gases
Methods of and apparatus for removing contaminants from heated gases by impact separation. The contaminants are collected by adhering them to a moving surface, and they are thereafter removed from...
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4589891 |
Hydrogen permeatin membrane, process for its manufacture and use
A process of manufacturing a hydrogen permeable membrane in which a hydrogen permeable metal is deposited galvanically on a fine mesh metal fabric.
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4586389 |
Dust detection
A portable aerosol dust spectrometer has an inlet section with a sampler entry having an entry efficiency for airborne dust approximately to that of the human head during inhalation, a clean-up...
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4568365 |
Methods of removing contaminants from heated gases
Methods of and apparatus for removing contaminants from heated gases by impact separation. The contaminants are collected by adhering them to a moving surface, and they are thereafter removed from...
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4547350 |
Abatement of indoor pollutants
Indoor pollutants such as formaldehyde can be removed from a home reactive method consisting of a coating on a furnace filter in a forced air heating system. The coating is a polymeric substance...
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4540625 |
Flexible air permeable non-woven fabric filters
A flexible, air permeable composite highly effective as a highly absorbent fiber filter, suitable for high throughput, low pressure drop applications. The composites and filters use a non-woven...
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4539021 |
Gas filtering method using fabric filter
A method for impregnating a bundle of sized glass fibers with a composition comprising a polytetrafluoroethylene resin, a film-forming acrylic resin, a thickening agent and a polyhydrolyzable...
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4536440 |
Molded fibrous filtration products
Molded filtration products, such as disposable face masks, are prepared by assembling at least one fibrous shaping layer and one fibrous filtration layer in face-to-face contact and subjecting the...
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4534775 |
Air treatment filter element and air treatment filter
An air treatment filter element is produced by contacting an adsorbent material selected from zeolite, activated carbon or a combination thereof with a liquid for inhibiting the growth of...
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4531957 |
Filtering material and filtration apparatus employing the filtering material
Filtering material and filtration apparatus employing the filtering material. The filtering material includes a perforated laminate of a plastic sheeting and a metalized coating adhesively attached...
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4521233 |
Disc cover for a frying pan or vessel
A disc-like cover for a frying pan comprising a disc stamped to form a carrier ring with a plurality of spoke-like radial arms connected to the ring and extending inwardly to a central region at...
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4512891 |
Pleated filter element with controlled expansibility and frame therefor
A filter assembly (10) includes a frame (10 and 12) and means (10, 32, 34, 36, 38, 44, 48, and 50) releasably retaining a replaceable pleated filter element (14) therein. The edges of the pleats...
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4510193 |
Filter sheet material
A filter sheet material consisting of an air-permeable, pliable, especially textile support which is covered only partially with a uniformly distributed adhesive on which adsorber particles,...
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RE31849 |
Porous media to separate gases liquid droplets and/or solid particles from gases or vapors and coalesce entrained droplets
Gas-vapor treating and filter mats composed of glass fibers intermixed with micro-bits of any of an expanded thermoplastic styrene-polymer or expanded thermoplastic lower polyolefin or flexible...
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4504290 |
Odor filter media
An improved filter construction for odor adsorption adapted to fit into a frame provided with front and rear support faces. The filter media consists of one or more sheets of non-woven material...
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4478620 |
Air filter
An air filter is described which is made of a non-woven fabric and an overlapped synthetic net which are intermittently point bonded together. The net has raised bumps which form the bonding points...
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4460392 |
Filter for ostomy bags
In a deodorizing gas filter for ostomy bags (22), consisting of a sheet (10) of deodorizing filter material, for example a porous foamed plastic with particles of active carbon, and having a...
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4460388 |
Total heat exchanger
A heat exchanger comprises an elongated plate folded in corrugated fashion and defining a stack of a number of laminated air passages defined by spacer parallel plane heat transfer faces or plates...
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4456648 |
Particulate-modified electret fibers
Fibrous web electrets are given added properties through inclusion of a particulate material, such as a flame-retardant agent, in less than all the layers of a plural-layer film from which fibers...
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4455195 |
Fibrous filter media and process for producing same
The disclosure relates to a novel and highly superior filter media formed of random-laid, lignin-containing fibers, and to a process for manufacture of the filter media. The process involves...
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4455281 |
Plate-shaped catalyst unit for NOx reduction of exhaust gas
The present invention relates to a plate-shaped catalyst unit for NOx reduction of exhaust gas, wherein molten metal is sprayed upon surfaces of a metal plate allowing the molten metal to...
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4455237 |
High bulk pulp, filter media utilizing such pulp, related processes
The disclosure related in part to a novel and highly superior high bulk pulp formed of lignin-containing fibers, and to process conditions for manufacture of the pulp. The process involves...
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4444574 |
Partially-carbonized polyacrylonitrile filter
A filter for extracting solids and liquids from gaseous combustion exhausts comprises a textile filter element formed of polyacrylonitrile fibers oxidized by careful heat treatment and comprising...
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4431542 |
Filter and method of producing the same
The invention deals with a filter for gas or liquid separation. The filter consists of a continuous fiber tissue within which a granular or powder formed (particle formed) activated material is...
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4427418 |
Device for collecting particulates in exhaust gases
A device for collecting and burning particulates in exhaust gases from an internal combustion engine comprises: a casing having an inlet port and a discharge port for exhaust gases; at least one...
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4422861 |
Aerosol filter cartridge
A circular array of accordian pleated filter material is core and edge sealed, placed in a supporting shell, peripherally sealed thereinplace and capped. Core sealing of the array of filter...
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4416777 |
Separation of leukocytes or lymphocytes from leukocyte-containing suspension
Leukocytes are separated from a leukocyte-containing suspension by bringing the leukocyte-containing suspension into contact with a leukocyte-separating material, whereby a substantial part of the...
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4411948 |
Air filter of three-dimensional mesh-structured webs
Air-cleaning filter element prepared by applying a pressure-sensitive adhesive agent to at least a pair of three-dimensionally mesh-structured elastic-flexible webs, disposing evenly an adsorbent...
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4404007 |
Exhaust gas cleaning element
An improved exhaust gas cleaning element comprising a ceramic honeycomb structure body having inner wall surfaces defining plural cells, each cell defining a passageway through which exhaust gas...
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4394146 |
Filter apparatus
Filtration apparatus in which the filter medium is in the form of a mat assembled with a support grid which is caused to traverse through a filter chamber in a zig zag path. The mat and support...
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4394147 |
Internally supported filter
An internally supported composite filter having a wire-like frame, two confronting sheets of filter media secured to the frame, a ring of adhesive at the center of the sheets secures their...
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