Matches 151 - 200 out of 233 < 1 2 3 4 5 >


Match Document Document Title
4075365 Turquoise-plastic-composite  
A turquoise is impregnated with a monomeric diester having two spaced apart polymerizable monoolefinic groups, said diester having a plurality of supplemental hydrophillic groups and a volatility...
4073380 High pressure reaction vessel for quality control of diamond growth on diamond seed  
Improvements are provided in reaction vessel construction used in the growth of diamond by the process disclosed in U.S. Pat. No. 3,297,407 -- Wentorf, Jr. In assembly of the reaction vessel of...
4056952 Diamond bearing microscopic certificate of appraisal  
A diamond with an inscription comprises a diamond gem structure having an outer surface cut and polished into a specific shape and a microscopic inscription formed at a specific position on the...
4042673 Novel diamond products and the manufacture thereof  
Diamond crystals of controlled impurity content and/or impurity distribution and reaction vessel configurations for the production thereof are described. Combinations of "dopant," "getter" and...
4034066 Method and high pressure reaction vessel for quality control of diamond growth on diamond seed  
Improvements are provided in reaction vessel construction used in the growth of diamond by the process disclosed in U.S. Pat. No. 3,297,407 -- Wentorf, Jr. In assembly of the reaction vessel of...
4030317 Simulated gemstone  
An artificial ornamental stone of cabochon shape comprising a transparent light or yellowish brown matrix in which are embedded parallel to the base of the stone transversely orientated parallel...
4020649 Brilliantized step cut diamond  
A step cut stone with a straight edged polygonal shaped girdle has a generally pyramidal base and a crown with at least girdle and table breaks wherein at least one of these breaks is cut with...
3997686 Ornament and method of manufacture  
An ornament is produced by drying an animal dropping, removing the natural outer coating to expose the interior grain and treating the dropping with a plastic or synthetic resin to form a hard...
3979924 Nonreflecting jewels for television broadcasting use  
A jewel for wear by television actors which consists of light-reflecting light-transmitting material. The jewel has cusps with external surfaces which reflect rays of light frontally approaching...
3959527 Flat costume jewelry and method for the surface treatment thereof  
Costume jewelry is manufactured through photofabrication processes from flat metal sheets to form items such as earrings and small pendants. A standard photo-fabrication operation includes...
3948845 Opalescent polymer compositions  
Opalescent-appearing compositions are prepared by dispersing conjugated diene/vinyl aromatic compound copolymers in a suitable solvent. Encapsulated compositions of this invention display the...
3941631 Paper art process  
A three-dimensional, ornamental product is made by cutting a two-dimensional design out of a planar laminate and abrading the design into the final three-dimensional shape of the product, thereby...
3912521 Synthetic crystal and method of making same  
An improved synthetic gem-like crystal simulating alexandrite and method of making the same, wherein, in one embodiment, the crystal is grown on a chrysoberyl seed placed in a flux melt...
3901717 Hard precious material  
A hard precious material having the appearance of a precious metal such as gold, platinum or silver, wherein a precious metal such as gold, platinum or silver is finely distributed in a base of...
3897529 Altering the appearance of corundum crystals  
The appearance of a corundum crystal is altered by subjecting the crystal to an elevated temperature while the crystal is embedded in a powder comprising a major amount of alumina, and a minor...
3875760 Girdled gem and method of making the gem  
The method of making a faceted gem by forming the gem body with a faceted crown and a faceted pavilion with a narrow girdle between the crown and pavilion, and rounding the girdle in cross-section...
3864939 DOUBLET HAVING FIBER OPTICAL ELEMENT FOR CHATOYANT OR ASTERISMAL DISPLAY  
A method of manufacturing gems including artificial gemstones or other works of art displaying the optical effect of single or multi-lined chatoyancy, even asterism, from fiber optical materials....
3848876 SCANNING ELEMENT  
A stylus for scanning signal-storing undulations on the surface of a carrier, which stylus includes a diamond whose tracing portion lies at the intersection of at least two natural crystal faces.
3840451 METHOD OF PRODUCING AN ARTIFICIAL DIAMOND FILM  
3835665 FACETED GEM WITH EMBEDDED MEANS FOR PRODUCING VARIABLE PATTERN  
The invention includes a substance embedded within the faceted pavilion of a stone causing a dispersed pattern to appear in the faceted crown of the stone.
3814926 LIGHTED EARRING  
A lighted earring includes a hollow body and a spaced clamp mechanism for attaching the same to an ear lobe of a person wearing the earring. A bracket including a socket is supported on the hollow...
3813310 METHOD FOR THE MANUFACTURE OF FLAT COSTUME JEWELRY  
3808836 DOUBLET GEM CONSTRUCTION  
A doublet gem stone having a crown member of relatively high hardness and a pavilion member of lesser hardness but of higher optical dispersion and refractivity, and wherein the interface of the...
3802945 HEAT SENSITIVE NOVELTY DEVICE  
A novelty device which utilizes the iridescing qualities of liquid crystalline material to effect variations in colorations of the device upon application of different temperatures.
3796065 STONE WITH EMERALD CUT CROWN AND MODIFIED BRILLIANT CUT BASE  
A diamond is cut to emerald shape with the conventional crown breaks and girdle. The base of the diamond is formed to pyramidal shape, the pyramid forming about 41° with the girdle plane. Adjacent...
3788097 BRILLIANT HAVING PLURAL RINGS OF FACETS, EACH HAVING AN ODD NUMBER OF FACETS  
A brilliant gem having upper and lower facets which are inclined to a girdle plane and formed by lateral surfaces of pyramids. The angle between the lower facets and the girdle plane ranges from...
3763665 BRILLIANT WITH OCTAGONAL TABLE AND SURROUNDING TRAPEZOIDAL FACETS  
A brilliant with a crown side and a collar side which connect to one another along an edge circle. The crown side comprises an octagonal table; along each one of the table sides is located an...
3755025 PRODUCTION OF DOUBLET BLANKS FOR SIMULATED DIAMONDS  
Improved process for the production of doublet blanks suitable for facetting into simulated diamonds by providing a first slab of a high dispersion, high refractive index material, such as...
3742731 GEM HAVING LIGHT PIPING FIBRES WITH CORES OF HIGH REFRACTVE INDEX AND CLAD LAYERS OF LOWER REFRACTIVE INDEX  
A method of manufacturing gems including artificial gemstones or other works of art displaying the optical effect of single or multi-lined chatoyancy, even asterism, from fiber optical materials....
3725092 ASTERIATED SYNTHETIC CORUNDUM GEM STONES  
3665729 CUT ORNAMENTAL GEM  
A diamond is cut to have optically cooperating first facets defining substantially the angle of dispersion so that light rays transmitted through the cooperating facets are dispersed. Second...
3655415 ASTERIATED SYNTHETIC CORUNDUM GEM STONES AND METHOD AND APPARATUS FOR THEIR PRODUCTION  
Asteriated synthetic corundum gem stones are provided which have their asteriating compounds as well as coloring compounds uniformly distributed throughout the body and which are free of the heavy...
3647279 COLOR DISPLAY DEVICES  
A display device for exhibiting a color pattern, said device comprising container means having a light-transmitting section and a juxtaposed darker hued or opaque section, a quantity of liquid...
3634281 OXYAPATITE LASER MATERIALS  
A composition of matter which can be used as a laser crystal in a laser generator and which can be doped with sensitizer ions has the empirical chemical formula RM4-x(ZO4)3O:Ax, where A represents...
3632523 CALCIUM-YTTRIUM SILICATE OXYAPATITE LASER MATERIALS  
A composition of matter which can be used as a laser crystal in a laser generator and which can be doped with sensitizer ions has the empirical chemical formula CaY4-x(SiO4)3O:Ax, where A...
3625669 FIBER OPTIC BUNDLE FUSION  
3626040 METHOD OF MAKING FUSED BUNDLES OF LIGHT-CONDUCTING FIBERS  
Forming a vacuum-tight fused bundle of light-conducting fibers in a compression mold. An elongated mold having a cross cavity with a plunger closing each of the four sides thereof is filled with...
3607488 ORNAMENTAL PRODUCTS MADE FROM PLANT MATERIAL  
There is provided an ornamental object and a process for producing the same. Naturally occurring plant material is comminuted to a desired size and shape, e.g., one-sixteenth to 1 inch, treated...
3585764 DIAMOND CUTTING METHOD  
A method of cutting a diamond to produce 72 pavilion facets comprising the steps of cutting four pavilion facets, then dividing the four into eight pavilion facets, then cutting the eight into 16...
3539379 PROCESS FOR COATING GEM STONES  
3528261 DOUBLET GEM CONSTRUCTION  
3521049 SELF-LUMINOUS JEWELRY  
3490250 ENHANCED JEWEL STONES AND METHOD OF FORMING SAME  
D035937 Title is not available  
D035938 Title is not available  
D235912 Title is not available  
D036103 Title is not available  
D036104 Title is not available  
D217634 Title is not available  
D036359 Title is not available  

Matches 151 - 200 out of 233 < 1 2 3 4 5 >