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| Patent # | Description |
|---|---|
| US-4,893,003 |
Circle-to-line interferometer optical system An optical system employs an internally conical reflector for converting circular fringe information, such as that which is produced by a Fabry-Perot... |
| US-4,893,002 |
Loss of optical input circuit A loss of optical input detector is disclosed disposed to receive a signal voltage from a fiber-optic receiver indicating that the optical input has dropped... |
| US-4,893,001 |
IC card A credit card type small thin rectangular IC card has a battery and an IC comprising a CPU, a ROM and a RAM mounted on a flexible printed circuit and bonded... |
| US-4,892,999 |
Calculator A see-through calculator or memory device comprises a transparent base, a see-through printed circuit board and a transparent switch panel. Liquid is housed in a... |
| US-4,892,998 |
Semi-conductive electrical heating device with voids Heating devices, in which a semi-conductor pattern is carried on an insulating surface and a pair of spaced apart electrodes are electrically connected to the... |
| US-4,892,997 |
Electric heaters An electric heater for a glass ceramic top cooker includes a base layer of thermal insulation material such as ceramic fiber or a microporous thermal insulation,... |
| US-4,892,996 |
Thermostatically controlled in-line diesel fuel heater using a bimetal
disc thermostat A fuel heater adapted to mount in series with a diesel engine fuel line comprises a metal pipe having a resistance heater wound around a first straight portion... |
| US-4,892,995 |
Electric portable desoldering iron Automatic portable unsolderer consisting of a solenoid supplied by alternating current, a cylinder whose piston has a rod consisting the core of said solenoid,... |
| US-4,892,994 |
Curling prevention device of thermal developing machine A curling prevention device of a thermal developing machine is provided at the outlet of a thermal developing and/or transfer step and thereafter with a... |
| US-4,892,993 |
Welding system for hollow thin walled members In a system for welding thin section aluminum castings to elongated sections of thin walled hollow aluminum extrusion, an expandable mandrel specific to the... |
| US-4,892,992 |
Industrial laser robot system A laser robot system including an offset robot. The system includes a laser beam generator for generating a laser beam. The robot includes a pedestal having a... |
| US-4,892,991 |
Utilization of a material possessing a micro-duplex grain structure Deflection of laser beams, irrespective as to whether this is implemented within or externally of the laser itself; necessitating the utilization of metal... |
| US-4,892,990 |
Automatic welding apparatus for weld build-up and method of achieving
weld build-up Apparatus for weld build-up on an surface of revolution consists of an elongated, rotatable assembly that supports, at one end, an electrical welding torch (10)... |
| US-4,892,989 |
Discharge machining apparatus having means for distinguishing abnormal
interelectrode gap conditions A discharge machining apparatus includes an electrode disposed in confronting relation to a workpiece with an insulative machining solution interposed... |
| US-4,892,988 |
Membrane panel switch A membrane panel switch is disclosed wherein a sheet of extruded foam-molded polypropylene with apertures for switches has a thickness greater than 2 mm, a... |
| US-4,892,987 |
Mounting for electrical control A screw mount control and adapter combination permits the screw mount control to be converted to a bushing mount control. The control cover is provided with a... |
| US-4,892,986 |
Vacuum circuit breaker An electrode of a vacuum circuit breaker includes a support electrode, an auxiliary support electrode of Co soldered to the support electrode, and an electric... |
| US-4,892,985 |
Vacuum responsive multicontact switch A multicontact vacuum responsive switch includes a housing divided into first and second chambers by a diaphragm. The first chamber is connected to a vacuum... |
| US-4,892,984 |
Rotary vacuum-electrical control A rotary vacuum-electrical switch controller is particularly applicable for use in an automatic temperature control system in a motor vehicle for selectively... |
| US-4,892,983 |
Programmer/timer with combined line and program function switch A combination programmer and line switch for an appliance having a rotary program cam and a timing motor connected for advancing the cam. An upper line power... |
| US-4,892,982 |
Timing mechanism with improved clutch assembly A clutch assembly permits a manual setting of a timing mechanism camstack by an appliance operator and at the same time insures that the camstack cannot be... |
| US-4,892,981 |
Snap-in modular keypad apparatus A modular snap-in keypad apparatus includes a planar frame member having a plurality of button accommodating apertures and a plurality of mounting posts... |
| US-4,892,980 |
Dual contacts on voltage rail The invention is a conveyor assembly (10) having a vehicle (12) which moves about a track (18). The track (18) includes rails (20) extending therealong for... |
| US-4,892,979 |
Multi-piece insulating bushing and method of securing an electrical
conductor thereto A hinged, two-piece molded plastic member foldable to form a bulkhead bushing for electrical conductors. A flexibly tapered, notched, multi-fingered inner end... |
| US-4,892,978 |
Self-supporting pedestal The pedestal is particularly suitable for housing cable television signal distribution outdoor equipment. It has a self-supporting base having a truncated... |
| US-4,892,977 |
Preparation of nonionic surfactants by oxyalkylation with a magnesium
catalyst Nonionic surfactants containing a narrow molecular weight distribution is obtained by the use of a magnesium-containing catalyst which comprises reacting a... |
| US-4,892,976 |
Process for the preparation of aldehydes The process for the preparation of an aldehyde of formula R--CHO in which R is an alkyl group of C.sub.1 -C.sub.7 comprises according to the invention the... |
| US-4,892,975 |
Diethynyl monomers and polymers thereof The compound 1,3-diethynyl tetrafluorobenzene, and compounds having the structure ##STR1## represents a perfluorinated benzene ring and X represents oxygen... |
| US-4,892,974 |
Process for producing mono-ortho-tert-butyl-aniline using silica-alumina
catalysts This invention relates to a process for producing mono-ortho-tert-butyl-aniline in high security selectivity and at high conversion using a silica-containing... |
| US-4,892,973 |
Process for producing 1,1-diphenylalkenes Disclosed herein is a novel process for producing 1,1-diphenylalkenes, comprising contacting lead peroxide with 1,1-diphenylalkanes having the structure wherein... |
| US-4,892,972 |
Purification of crude terephthalic acid Aqueous solutions of crude terephthalic acid are purified by hydrogenation in the presence of plural noble metal catalysts in separate layers. Initially, the... |
| US-4,892,971 |
Process for the preparation of n-acetylphenylalanine In the process for the preparation of N-acetylphenylalanine by opening the ring of 2-methyl-4-benzylidene-1,3-oxazolin-5-one with water to give ... |
| US-4,892,970 |
Staged aromatics oxidation in aqueous systems Improved acid yield and product quality are realized in the oxidation of aromatic hydrocarbons in a two-stage process, employing an aqueous solvent system and an... |
| US-4,892,969 |
Process for the preparation of 1-amino-2-naphthol-4-sulfonic acid Process for the preparation of 1-amino-2-naphthol-4-sulfonic acid by treating 1-hydroxylamino-2-tetralone-4-sulfoniuc acid with an alkali metal pyrosulfite in... |
| US-4,892,968 |
3,3'-Dichloro-4,4-diaminodiphenyl sulfonic acids The invention provides compounds having the formula I or II ##STR1## and their salts and hydrates, having high value as intermediates for dyestuff additives... |
| US-4,892,967 |
Citrate esters Citrate esters are formed utilizing organic titanates as a catalyst allowing excess alcohol to be removed. Four citrate esters have been found which provide... |
| US-4,892,966 |
Acetoacetic acid ester derivatives for the manufacture of
.alpha.-hydroxycarbonyl compounds The invention is concerned with a novel process for the manufacture of compounds of the formula ##STR1## wherein R.sup.1 signifies C.sub.1-5 -alkyl,... |
| US-4,892,965 |
Producing bis (alicyclic) thioethers 3,3'-Thiobis(2,5-dihydrothiophene-1,1-dioxides) on heating with a reactive Diels-Alder dienophile undergo a reaction producing thioethers having two six-membered... |
| US-4,892,964 |
Hydrazide-containing thermoplastic polymers exhibiting nonlinear optical
response In one embodiment this invention provides a nonlinear optical medium which is a transparent film of a thermoplastic polymer composed of recurring monomeric units... |
| US-4,892,963 |
N-phenyl amide compounds Compounds of the following formula have pharmaceutical properties: ##STR1## in which X is R.sup.1 (HO)C.dbd.C(CN)--, R.sup.1 (CO)--CH(CN)-- or ##STR2## ... |
| US-4,892,962 |
Process for the preparation of 2,2-difluoropent-4-enoic acids and acid
derivatives The reaction of allyl bromo- or chloro-difluoroacetates with monochlorisilanes in the presence of zinc with heating gives silyl esters of... |
| US-4,892,961 |
Amino acid derivatives, and their production An amino acid derivative of the formula: ##STR1## wherein R.sup.1 is a protective group for hydroxyl, which is useful as an intermediate for production of... |
| US-4,892,960 |
Crystalline lysocellin compositions and method of making Crystalline lysocellin compositions, and method of making them. These compounds are useful for promoting growth and feed efficiency in food producing mammals by... |
| US-4,892,959 |
Method for the production of N-methylpyrrolidine A method is disclosed for the improved production of N-methylpyrrolidine at moderate conditions which comprises the steps of reacting N-methylpyrrolidone with... |
| US-4,892,958 |
Preparation of 5-amino-1-phenyl-4-nitropyrazoles A process for the preparation of a 5-amino-1-phenyl-4-nitropyrazole of the formula ##STR1## in which Ar is optionally substituted phenyl, which comprises... |
| US-4,892,957 |
Process for the preparation of a n-alkylated bipyrazoleanthrone A N-alkylated 2,2'-bipyrazoleanthrone of formula ##STR1## wherein R is C.sub.1 -C.sub.8 alkyl, is prepared by dimerising a 1,9-pyrazoleanthrone of formula ... |
| US-4,892,956 |
5-cyano-4,5-dihydro-3,4-dicarboxypyrazole derivatives The present invention provides 5-cyano-4,5-dihydro-3,4-dicarboxypyrazoles and a process for preparing such compounds which comprises reacting a dialkyl fumarate... |
| US-4,892,955 |
Method for producing a lactone A method for producing a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester in the presence of a... |
| US-4,892,954 |
Process for the preparation of 2-oxo-1,3-dioxolanes Process for the preparation of 2-oxo-1,3-dioxolanes by reaction of epoxides with carbon dioxide in the presence of a catalyst, wherein at least one epoxy... |
| US-4,892,953 |
Benzthiazole substituted diacid terphenyl monomers Phenylbenzthiazole-substituted p-terphenylene dicarboxylic acids of the formula ##STR1## wherein R.sub.1 is --H or ##STR2## R.sub.2 is ... |
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