Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 4361396 | Collecting apparatus for scattering toner An apparatus for collecting scattering magnetic toner includes an air flow path, a toner collecting chamber at one end of the flow path, a suction device for generating a directional flow of air for transporting scattering toner through the air flow path ... | 11/30/1982 |
| 4358132 | Multidirectional release safety ski binding A safety ski binding includes an end piece engageable with a ski boot and horizontally pivotable on a body rotatably mounted on a pivot member carried on the surface of a ski for vertical pivotability with respect to the ski. The vertical pivot member inc... | 11/09/1982 |
| 4351744 | Karl-Fischer Reagent There is disclosed a Karl-Fischer reagent which consists essentially of iodide, sulfur dioxide, pyridine and an alkylene carbonate of the formula: ##STR1## wherein R represents a hydrogen atom and a lower alkyl group. The reagent is superior in its h... | 09/28/1982 |
| 4350765 | Method for producing ethanol with immobilized microorganism Ethanol is produced in high concentration of 75 mg/ml or above such as 200 mg/ml by using an immbolized ethanol-producing microorganism to convert sugar to ethanol in a nutrient culture broth containing not more than 100 mg/ml sugar until the concentratio... | 09/21/1982 |
| 4330138 | Combined ski boot and safety binding assembly In this assembly comprising a ski boot and a safety ski binding for the heel end of the ski boot, adapted to cooperate with the heel end by means of a heel clamping member, the rounded rear end of the upper extends beyond the heel end of the sole, and a r... | 05/18/1982 |
| 4324856 | Silver halide photographic material A photographic silver halide material is disclosed which contains a precursor of photographic chemicals.... | 04/13/1982 |
| 4324800 | Novel benzylalcohol derivatives and processes for preparing same A compound of the formula: ##STR1## wherein R is alkanoyl of one to 20 carbon atoms, benzoyl or lower alkyl-benzoyl, and processes for preparation thereof are disclosed. Said compound (I) and a pharmaceutically acceptable acid addition salt thereof ... | 04/13/1982 |
| 4323570 | Substituted aminopyrimidines The present invention is directed to certain aminopyrimidines of the general formula ##STR1## wherein R1, R2, and R3 are hydrogen, halogen, alkoxy, alkylthio, or alkyl having 1 to 4 carbon atoms, or cycloalkyl having ... | 04/06/1982 |
| 4322069 | Sheet sorting apparatus A sheet sorting apparatus for use in combination with an electrophotographic copying machine includes introducing rollers, discharge rollers, and a pair of transporting belts disposed in superposed relation in a tensioned state for feeding copy sheets in ... | 03/30/1982 |
| 4322555 | Nonaprenylamine derivatives This invention relates to new nonaprenylamine derivatives and the acid addition salts thereof, which are useful for controlling virus infection of vertebrate animals.... | 03/30/1982 |
| 4320952 | Sheet transport in electrophotographic copying apparatus In a transfer type electrophotographic copying apparatus having a rotatable photosensitive drum for receiving an electrostatic latent image of an original and a heating device comprising a heating roller and a pressure-contact roller rotatable in a condit... | 03/23/1982 |
| 4320066 | Process for the production of cobaltocen A process for the production of cobaltocen comprising reacting at least one cobalt alcoholate with cyclopentadiene in the presence of at least one alkaline catalyst is disclosed. The reaction product may be purified by various combinations of distillation... | 03/16/1982 |
| 4318878 | Manufacturing method for soap bars A process for the production of a compound bar of soap, said bar comprising a primary piece of soap and at least one secondary piece of soap embedded therein, is disclosed. The process comprises (a) extruding the primary piece and each secondary piece at ... | 03/09/1982 |
| 4319054 | Process for producing pyrogallol There is disclosed a process for producing pyrogallol by dehydrogenation of cyclohexane-1,2,3-triol in the presence of a platinum group metal catalyst in an inert gas stream. The catalyst contains, as modifier, (a) at least one alkali metal salt and/or (b... | 03/09/1982 |
| 4318915 | Substituted guandines and methods of preparation thereof A compound of the formula ##STR1## wherein R1 is chlorine, bromine, or methoxy; and R2, R3, and R4 are individually hydrogen or methyl, at least one of R2, R3, and R4 being ... | 03/09/1982 |
| 4317945 | Process for preparing 2-methyl-2-sec.butyl-1,3-propanediol A process for the preparation of 2-methyl-2-sec.butyl-1,3-propanediol comprising hydroformylating 2-methyl-1-butene with carbon monoxide and hydrogen in the presence of a first catalyst to form the substance 3-methyl-pentanal, condensing said substance wi... | 03/02/1982 |
| 4313343 | Apparatus for detecting remaining quantity of toner in electrophotographic copying machine An apparatus for detecting the amount of toner in the supply hopper of an electrophotographic copying machine includes a transmitting element in the hopper for generating an ultrasonic acoustic wave and a receiving element in the hopper in operative relat... | 02/02/1982 |
| 4313674 | Cleaning apparatus for copying or the like A cleaning apparatus for removable insertion in an electrophotographic copying machine includes an exhaust cylinder having an opening at an end portion thereof and a conveyor in the cylinder operable for carrying particulate developer through the cylinder... | 02/02/1982 |
| 4313731 | Mono-azo compound, mono-azo dye and dyeing process for polyester fibers Mono-azo compounds and mono-azo dyes represented by the following general formula and a dyeing process for polyester fibers using the mono-azo dyes: ##STR1## wherein R1 and R2 individually represent hydrogen atom, substituted or... | 02/02/1982 |
| 4313875 | Purification of penicillin derivative Crude 6-[D-2-(D-2-amino-3-N-methylcarbamoyl-propionamido)-2-p-hydroxyphenylaceta mido]penicillanic acid can be purified by the steps of: (A) contacting an aqueous solution of 6-[D-2-(D-2-amino-3-N-methylcarbamoyl-propionamido)-2-p-hydroxyphenylaceta mi... | 02/02/1982 |
| 4314023 | Photographic silver halide materials containing yellow coupler A photographic yellow coupler having a general formula selected from the group consisting of (I), (II) and (III) ##STR1## wherein A is a yellow coupler residue defined by removing one hydrogen atom of a active methylene group from a yellow coupler ha... | 02/02/1982 |
| 4314035 | Method for the preparation of polymer foams Foamable copolymers and copolymer mixtures comprising 35% to 98% by weight ethylene, 1% to 30% by weight vinyl alcohol, 1% to 30% by weight acrylic acid esters of secondary or tertiary alcohols, and 0 to 5% by weight vinyl ester are disclosed. All percent... | 02/02/1982 |
| 4314242 | Apparatus for detecting a residual quantity of toner An apparatus for detecting a residual quantity of toner remaining in the supply hopper of a copying machine includes a piezoelectric vibrating element disposed in a wall of the hopper and having a surface normally positioned in contact with toner in the h... | 02/02/1982 |
| 4313671 | Method and apparatus for controlling image density in an electrophotographic copying machine A method of controlling image density in an electrophotographic copying machine includes operating a first detector to measure the density of a blank region on a photosensitive member, operating a second detector to measure the density of a reference tone... | 02/02/1982 |
| 4309362 | Process for the optical resolution of DL-p-hydroxy-phenylglycine Seed crystals of an optically active enantiomer of any one of p-hydroxyphenylglycine benzenesulfonate, p-hydroxyphenylglycine p-ethylbenzenesulfonate, p-hydroxyphenylglycine o-toluenesulfonate or p-hydroxyphenylglycine sulfosalicylate are added to a super... | 01/05/1982 |
| 4309088 | Film magazine having an identity mark for identifying sensitivity of the film and a camera therefor A film magazine is provided with a peripheral surface carrying at least one photoelectrically discriminatable strip-like mark indicative of the sensitivity of film contained within the magazine, and a photographic camera having a shutter operating circuit... | 01/05/1982 |
| 4306329 | Self-propelled cleaning device with wireless remote-control A self-propelled cleaning device with wireless remote control includes a body, a driving device on the body for moving the same rotatably about its axis or in a straight line along the underlying ground surface, and a vacuum cleaning device carried on the... | 12/22/1981 |
| 4307097 | Method of reducing increased intracranial pressure Increased intracranial pressure in warm-blooded animals is reduced by administering to the warm-blooded animals a therapeutically effective amount of a propanol derivative of the formula: ##STR1## wherein R is alkyl having one to 4 carbon atoms and R... | 12/22/1981 |
| 4306010 | Photosensitive o-quinone diazide composition and photosensitive lithographic printing plate A photosensitive composition useful for making a photosensitive lithographic printing plate are made from a condensation product of sulfonylchloride of o-benzoquinone diazide or o-naphthoquinone diazide and a polyhydric phenol resin obtained by condensing... | 12/15/1981 |
| 4305286 | Method and apparatus for measuring the temperature in reactors A method and apparatus for directly measuring the interior temperature of a pressurized reactor includes a temperature sensor movable along a measurement channel between a measurement position within the reactor and a retracted position outside the reacto... | 12/15/1981 |
| 4306011 | Photosensitive composite and photosensitive lithographic printing plate A photosensitive composition useful for making a photosensitive lithographic printing plate are made from a condensation product of sulfonyl chloride of o-benzoquinone diazide or o-naphthoquinone diazide and a polyhydric phenol resin obtained by condensin... | 12/15/1981 |
| 4304850 | Photographic element for color diffusion transfer process A photographic element for color diffusion transfer which includes a timing layer comprising a polymeric latex made up of (1) a conjugated diene monomer, (2) and ethylenically unsaturated acid monomer or salt, and (3) an ethylenically unsaturated monomer,... | 12/08/1981 |
| 4304845 | Silver halide photographic materials containing photographic yellow coupler The present invention relates to a process for forming a yellow color image which requires contacting exposed silver halide grain with a developer in the presence of a particular yellow coupler.... | 12/08/1981 |
| 4302521 | Photosensitive element for electrophotography The present invention relates to a photosensitive element for electrophotography comprising on an electrically conductive support a charge carrier generating phase and a charge carrier transport phase containing a P-type organic semiconductor, a poly-N-vi... | 11/24/1981 |
| 4300757 | Apparatus for receiving recording sheets in upset state for copying machine An apparatus for collecting copy sheets in facially reversed or overturned relation with respect to their discharge from a copying machine includes a guide member disposed proximate the discharge port of the machine. The guide member comprises a substanti... | 11/17/1981 |
| 4300579 | Process for the manufacture of a tobacco rib cut having an improved filling capacity A method for the treatment of tobacco stems which comprises providing the tobacco stems in the uncut condition with a moisture content ranging from 15 to 70% relative to the dry weight of the tobacco stems, performing at least one first cut of said tobacc... | 11/17/1981 |
| 4301238 | Method for the manufacture of silver halide photographic material An improved method of producing a silver halide photographic material having a layer containing gelatin coated on a support is disclosed. The coated layer is dried so that its surface temperature during the falling rate drying period is more than 5° C. o... | 11/17/1981 |
| 4299908 | Method for forming a negative image A method for forming a negative image comprising imagewise exposing a photographic material to provide exposed areas and unexposed areas, said material comprising, on a support, (1) an emulsion layer containing a light-sensitive silver halide, (2) unsensi... | 11/10/1981 |
| 4299231 | Electrically conductive, visco-elastic gel and its use in electrode A visco-elastic gel comprising a high molecular weight polysaccharide, at least one polyol and, optionally, at least one non-volatile acid soluble in the polyol and at least one non-volatile base soluble in the polyol. The polyol has a water content of 5 ... | 11/10/1981 |
| 4299914 | Method for forming a cyan dye image A method for forming a cyan dye image by development of an exposed silver halide photographic material with a developer containing a cyan coupler of the following formula: ##STR1## in which R represents hydrogen atom or an alkyl group having a carbon... | 11/10/1981 |
