Did You Know...
...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4310331 | Process for the preparation of the dyestuff direct yellow 11 in the form of concentrated stable solutions, the solutions obtained and their applications The invention relates to a process for the preparation of the dyestuff Direct Yellow 11 directly in the form of stable concentrated solutions, in which caustic soda in aqueous solution is reacted, at a temperature from 40° to 90° C., with a solution con... | 01/12/1982 |
| 4305278 | Abrasion testing Abrasion testing, and hence particle content of fluids including liquids and gases is carried out by abrading a thin film 25 of an electrical conductor with the fluid, and measuring the resulting change in electrical resistance of the film. The method can... | 12/15/1981 |
| 4304606 | Plasticized coal tar pitch, composition containing same and its use This invention relates to a plasticized coal tar pitch comprising a mixture consisting essentially of about 50 to about 80 weight percent of a coal tar pitch having a softening point of about 40° to about 75° C. (Kramer-Sarnow); and about 50 to about 20... | 12/08/1981 |
| 4302366 | Fluorinated products intended for oilproofing and waterproofing treatments of various materials and more particularly of fibrous materials The present invention relates to new fluorinated products resulting from the reaction of: (a) one molecule of one or more acids of the formula: and of (b) one to five molecules of one or more compounds possessing at least one ethylenic bond, at least one of t... | 11/24/1981 |
| 4274831 | Process for dyeing or printing synthetic fiber materials by means of disperse dyes, and colorant compositions utilizable for this purpose A process of dyeing or printing of synthetic fiber materials by means of disperse dyes carried out in the presence of at least one derivative of a metal having an atomic number in the range of 24 through 30 to prevent or diminish the degradation of the dy... | 06/23/1981 |
| 4270235 | Arm support pillow A support device for the arms of convalescent patients for providing comfort and stability and for preventing circulation problems includes an inclined cushion provided with ridges on either side to prevent the arm from falling off and an angled shape to ... | 06/02/1981 |
| 4264326 | New disperse dyestuffs; their preparation and their applications to the coloration of synthetic materials New disperse dyestuffs which may be used especially for the coloration of artificial or synthetic materials correspond to the general formula: ##STR1## in which R1 represents a hydrogen or halogen atom or a nitro, alkyl or alkoxy group and... | 04/28/1981 |
| 4238612 | Process for the isomerization of derivatives of 3-vinyl-piperidine A process for the conversion of compounds of the formula: ##STR1## in which R is a hydrogen atom or a substituent and for which the carbon carrying the vinyl group has the rectus configuration, into the corresponding compounds of formula (I) for whic... | 12/09/1980 |
| 4224295 | Process for the production of finely divided silicic acid by spray drying A finely divided silicic acid having a pH>6 is prepared by spray drying, in the presence of a base or basic-reacting substance, a highly concentrated silicic acid suspension having excess, unwanted acidity.... | 09/23/1980 |
| 4218367 | Reactive complex chromium-bearing azo dyestuffs Complex chromium-bearing dyestuffs of formula: ##STR1## where A represents a diazotizable amine residue, B represents the residue of a coupling agent, Y1 represents a --O-- or ##STR2## residue, Y2 represents a --O-- or ##S... | 08/19/1980 |
| 4212647 | Water-insoluble azo dyestuffs which are derivatives of 1-aryl-3-trifluoromethyl-5-pyrazolones Water-insoluble azo dyestuffs corresponding to the formula: ##STR1## in which X represents halogen, cyano, nitro, alkyl, polyfluoroalkyl, polyfluoroalkoxy, alkylsulphonyl, sulphonamido, or sulphonamido substituted by one or two alkyl groups; Y and Z ... | 07/15/1980 |
| 4208213 | Shoe cream polish composition A shoe cream polish composition which contains in addition to waxes, oils and the like, a finely divided pyrogenic, hydrophobic silicic acid.... | 06/17/1980 |
| 4152284 | Accelerator combination for the cross-linking of powder paints An accelerator combination is provided for the cross-linking of powder paints containing an acrylic resin containing carboxyl groups and an epoxy resin at elevated temperatures, said accelerator containing, based on the weight of said acrylic resin: (a) 0... | 05/01/1979 |
| 4139575 | Polyoxymethylene molding composition containing melamine formaldehyde polycondensate In a molding composition comprising a polyoxymethylene, a melamine formaldehyde polycondensate and an antioxidation agent, the improvement wherein said melamine formaldehyde polycondensate is a finely divided, cross-linked, substantially water insoluble p... | 02/13/1979 |
| 4113682 | Coating composition containing resin having tertiary aliphatic group and reactive hydroxyl group, process for its preparation and article coated with the composition A coating composition capable of producing a coating film having excellent water-proof property, solvent-resistant property, chemical-resistant property, thermal stability and hardness, which comprises water, a water-soluble solvent and a water-soluble, t... | 09/12/1978 |
| 4109093 | Process for making 2-(4'-aminophenyl) 5-amino benzimidazole A process for preparing 2-(4'-aminophenyl) 5-amino benzimidazole, a known intermediate used in the synthesis of azo dyes, is disclosed wherein p-nitrobenzoic acid is condensed with aniline, and the N(4'-nitrobenzoyl) aniline produced is dinitrited to N(4'... | 08/22/1978 |
| 4101540 | 3-Trifluoromethyl-4-phenyl-pyrazolium azo dyestuffs Azopyrazolium dyes of the formula: ##STR1## in which R1 represents an alkyl group or a phenyl group which may be substituted with a halogen atom or with a nitro, alkoxy or alkyl group, R2 represents an alkyl group; R3... | 07/18/1978 |
| 4101480 | Pigmentary printing paste additive Liquid additive, which is substantially insoluble in water, for a pigmentary printing paste for use in printing on textile fibers and fabrics, wherein the additive comprises a surface-active, non-ionic liquid product having a molecular weight of between 1... | 07/18/1978 |
| 4093656 | Process for making azines A process is described for the production of azines by contacting in the liquid phase ammonia, hydrogen peroxide and a carbonyl compound, either an aldehyde or a ketone. The reaction takes place in the presence of an amide (I) of a monocarboxylic or dicar... | 06/06/1978 |
| 4064255 | Compositions containing new indole derivatives and their use in pharmacology Compositions containing indole derivatives of the formula ##STR1## are useful in pharmacology.... | 12/20/1977 |
| 4049375 | Process for dyeing synthetic fibers formed from aromatic polyesters and new monoazo dyestuffs useful for such dyeing The dyeing of synthetic polyester fibers wherein the dyestuff is a mono-azo dyestuff of the formula ##STR1## in which X represents a hydrogen, chlorine, bromine, cyano, nitro or lower alkylsulphonyl radical, R1 represents hydrogen, chlorin... | 09/20/1977 |
| 4008213 | Azo dyestuffs containing a cinnamonitrile residue Dyestuffs of the general formula: ##STR1## in which the radical --CH=CH--CN is fixed in the 4- or 5- position, X represents a hydrogen or chlorine atom, the benzene nucleus A is unsubstituted or substituted by at least one chlorine atom or alkyl, ... | 02/15/1977 |
| 3975006 | Impact kinetic energy absorber An impact kinetic energy absorber with automatic return in which the kinetic energy of impact is applied to an impact receiving container having a movable wall and substantially filled with plastic material which on impact is forced to be extruded through... | 08/17/1976 |
| 3960587 | Phthalocyanines, compositions derived therefrom and processes for their preparation Compounds falling within the formula: ##EQU1## in which Pc represents the residue of a phthalocyanine, R1 represents an alkyl group of low molecular weight or a cycloalkyl group, R2 represents a hydrogen atom, an alkyl group of ... | 06/01/1976 |
| 3960952 | Anhydrous bases and salts of dyestuffs of the auramine series, process for their preparation and their use Process for the preparation of an anhydrous base or salt of a dyestuff of the Auramine series, which comprises isolating the base or salt in acetone, methylethylketone or diethylketone; products prepared by such a process; the hydrofluoride of the base of... | 06/01/1976 |
| 3956121 | Process for the precipitation of heavy metal ion-polycarboxylate complexes A process for precipitating heavy metal ion-polycarboxylate complexes from solution, said process comprising adding to a solution containing at least one of said complexes an aqueous solution of a water soluble aluminum salt, the anion of which does not f... | 05/11/1976 |
| 3956452 | Dry-type isostatic pressing method involving minimization of breaks or cracks in the molded bodies A method for avoiding cracking of the molded body during the decompression step in an isostatic pressing method of molding. The powders to be molded are housed in a shaping rubber mold, are molded under pressure, and the improvement is characterized by su... | 05/11/1976 |
| 3949996 | Fluid pressure seal arrangement In a body supporting another body via a land into which sealing gas is supplied via an in-coming gas groove or grooves for liquid sealing purpose and from which fluid is discharged through a fluid groove, one or more sets of out-going gas grooves are form... | 04/13/1976 |
