Bizarre Patents
Pet Toilet-Like Water Disk and Food Storage
One pet-friendly inventor patented "a device for watering pets, e.g., a dog or cat." The device, he helpfully noted, "has the general shape of a toilet."
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 |
| 5262574 | Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination in the presence of catalysts A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF3 in the gamma and/or beta form.... | 11/16/1993 |
| 5243108 | Aluminum fluoride catalyst compositions and use thereof in a chlorofluorination process for preparing 1,1-dichloro-1,2,2,2-tetrafluoroethane A catalyst composition is disclosed which consists essentially of an aluminum fluoride prepared by the reaction of aluminum hydroxide and HF. Also disclosed is a process for preparing 1,1,-dichloro-1,2,2,2-tetrafluoroethane by chlorofluorination which ... | 09/07/1993 |
| 5243105 | Chemical process 1,1,1,2-tetrafluoroethane (HFA 134a) is manufactured from trichloroethylene by a two-stage process comprising reacting trichloroethylene with hydrogen fluoride under superatmospheric pressure in a first reaction zone to form 1,1,1-trifluoro-2-chloroethane... | 09/07/1993 |
| 5243106 | Processes using aluminum fluoride catalyst compositions for preparing 1,1-dichloro-1,2,2,2-tetrafluoroethane A process is disclosed for transforming a saturated reactant (e.g. 1,1,2-trichloro-1,2,2-trifluoroethane) into a saturated product (e.g. 1,1-dichloro-1,2,2,2-tetrafluoroethane) by contacting a gaseous mixture comprising said reactant with an aluminum fluo... | 09/07/1993 |
| 5243107 | Chemical process 1,1,1,2-tetrafluoroethane (HFA 134a) is manufactured from trichloroethylene by a two-stage process comprising reacting trichloroethylene with hydrogen fluoride in one reactor to form 1,1,1-trifluoro-2-chloroethane (133a) and reacting the 1,1,1-trifluoro-2... | 09/07/1993 |
| 5233105 | Process for halogen-fluorine exchange in organic compounds and catalysts for this process Bismuth/alkaline earth metal catalysts which contain 0.005-0.8 g-atom of bismuth per mol of the alkaline earth metal compound employed and can furthermore contain promoters and/or inert additives, and lanthanide catalysts with or without catalyst supports... | 08/03/1993 |
| 5214223 | Method of preparing fluorine-containing ethane derivatives A method of preparing fluorine-containing ethane derivatives using a catalyst mixture which comprises a metal halide and a sulfonic acid derivative is described. The method is particularly well suited for preparing CF3 CHCl2 (R123) f... | 05/25/1993 |
| 5208395 | Manufacture of hydrofluorocarbons A novel, heterogeneously-catalyzed, gas phase process for the production of 32 and 152a which comprises contacting the corresponding 1,1-dichloroalkane and HF in the vapor phase in the presence of a Lewis acid catalyst such as tin tetrachloride.... | 05/04/1993 |
| 5185482 | Manufacture of 1,1,1,2-tetrafluoroethane This invention provides an improved process for the manufacture of 1,1,1,2-tetrafluoroethane by the reaction of HF and trichloroethylene in the presence of a catalyst to form a mixture comprising 2-chloro-1,1,1-trifluoroethane and 1,1,1,2-tetrafluoroethan... | 02/09/1993 |
| 5177273 | Process for the manufacture of halogen-substituted propanes containing hydrogen and at least five fluorine substituents A vapor phase process is disclosed for producing HCFC-225s, HCFC-235s, HCFC-226s, HFC-236s, and HFC-227s by reacting certain three-carbon reactants containing at least one less fluorine than, and at least as many hydrogen substituents as the desired produ... | 01/05/1993 |
| 5159126 | Process for the manufacture of 1-chloro-1,1-difluoroethane 1-Chloro-1,1-difluoroethane is prepared by reacting hydrogen fluoride with vinylidene chloride, in a liquid medium containing preferably at least 40 mol % 1,1-dichloro-1-fluoroethane.... | 10/27/1992 |
| 5155082 | Catalyst for the manufacture of chlorofluorocarbons, hydrochlorofluorocarbons and hydrofluorocarbons The invention relates to a novel catalyst and process for producing various chlorofluorocarbons, hydrochlorofluorocarbons and hydrofluorocarbons said catalyst prepared by co-extruding aluminum/chromium oxide and optionally impregnating the aluminum/chromi... | 10/13/1992 |
| 5105033 | Process for preparing 1,1-dichloro-1-fluoroethane A manufacturing process is disclosed for preparing 1,1-dichloro-1-fluorethane by the addition of hydrogen fluoride to 1,1-dichloroethylene in the presence of a hydrofluorination catalyst providing 1,1-dichloro-1-fluoroethane in high yields and reduced ... | 04/14/1992 |
| 5091601 | Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination in the presence of catalysts A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF3 in the gamma and/or beta form.... | 02/25/1992 |
| 5068472 | Multistep synthesis of hexafluoropropylene The present invention relates to multistep syntheses of hexafluoropropylene from hexachloropropylene. In all these syntheses the first step is a fluorination of the starting material; later steps convert the initial products to CF3 --CFCl--CF | 11/26/1991 |
| 5057634 | Multistep synthesis of hexafluoropropylene The present invention relates to multistep syntheses of hexafluoropropylene from acyclic three-carbon hydrocarbons or partially halogenated acyclic three-carbon hydrocarbons. In all these syntheses the first step is a vapor-phase chlorofluorination of the... | 10/15/1991 |
| 5051538 | Process for 1,1-dichloro-1-fluoroethane An improved process for preparing 1,1-dichloro-1-fluoroethane by hydrogen fluoride addition, in the vapor phase, to 1,1-dichloroethylene in the presence of an aluminum fluoride catalyst.... | 09/24/1991 |
| 5051537 | Gas-phase fluorination An improved process is disclosed for the manufacture of 1,1,1,2-tetrafluoroethane, more particularly, a gas-phase reaction of 1,1,1-trifluorochloroethane with hydrogen fluoride in the presence of a catalyst, a selected metal on aluminum fluoride, and mole... | 09/24/1991 |
| 5045634 | Fluorination of haloolefins A process for fluorination by contacting a haloolefin with molten alkali metal acid fluoride to provide a fluorinated saturated or unsaturated hydrocarbon having at least one more fluorine than the starting haloolefin.... | 09/03/1991 |
| 5043491 | Multistep synthesis of hexafluoropropylene The present invention relates to multistep syntheses of hexafluoropropylene from propane, propylene or partially halogenated acyclic three-carbon hydrocarbons. In all these syntheses the first step is a vapor-phase chlorofluorination of the starting mater... | 08/27/1991 |
| 5026930 | Gas-phase fluorination process An improved gas-phase process for the manufacture of 1,1-difluoro-1,2-dichloroethane and/or 1-fluoro-1,1,2-trichloroethane by contacting a suitable trihaloethylene and/or a tetrahaloethane with hydrogen fluoride in the presence of a metal in combination w... | 06/25/1991 |
| 5008474 | Process for the manufacture of 1-chloro-1,1-difluoroethane 1-Chloro-1,1-difluoroethane is prepared by reacting hydrogen fluoride with vinylidene chloride, in a liquid medium containing preferably at least 40 mol % 1,1-dichloro-1-fluoroethane.... | 04/16/1991 |
| 5008476 | Process for the preparation of 1,1,1,2-tetrafluoroethane Improved process for the preparation of 1,1,1,2-tetrafluoroethane by the steps of chlorofluorination of selected organic compounds using Cl2 and HF followed by hydrogenolysis of the resulting products, the improvement residing in the use of exc... | 04/16/1991 |
| 4996379 | Method of preparing 1,1,1,2-tetrafluoroethane from 1,1-dichloro-1,2,2,2-tetrafluoroethane 1,1,1,2-Tetrafluoroethane, a refrigerant, is formed with little formation of isomers or chlorofluoroethanes having not very different boiling points by reacting 1,1-dichloro-1,2,2,2-tetrafluoroethane (R-114a), which may contain up to about 25 wt% of 1,2-d... | 02/26/1991 |
| 4968850 | Process for the manufacture of a fluorinated hydrocarbon The invention relates to a process for the manufacture of a fluorinated hydrocarbon by the reaction of hydrogen fluoride with an unsaturated chlorinated hydrocarbon in the liquid phase in the presence of a catalyst constituted by a tin compound and of an ... | 11/06/1990 |
| 4967023 | Process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination in the presence of catalysts A process for preparing 1,1,1-trifluoro-2,2-dichloroethane by hydrofluorination, in the gas phase, of perchloroethylene in the presence of a catalyst comprising chrome oxides supported on AlF3 in the gamma and/or beta form.... | 10/30/1990 |
| 4922037 | Gas-phase fluorination process An improved process for the manufacture of 1,1,1,2-tetrafluoroethane, more particularly, a gas-phase reaction of a 1,1,1-trifluorochloroethane with hydrogen fluoride in the presence of a selected metal on aluminum fluoride or carbon.... | 05/01/1990 |
| 4766259 | Gas-phase fluorination process An improved gas-phase process for the manufacture of 1,1-difluoro-1,2-dichloroethane and 1-fluoro-1,1,2-trichloroethane by contacting a suitable trihaloethylene and/or a tetrahaloethane with hydrogen fluoride in the presence of a metal in combination with... | 08/23/1988 |
| 4745236 | Synthesis of chloropentafluoroethane The invention relates to a gas phase process for the manufacture of chloropentafluoroethane by the action of hydrofluoric acid on dichlorotetrafluoroethane in the presence of a catalyst, the said catalyst being prepared by reacting, in a gaseous phase, an... | 05/17/1988 |
| 4605798 | Continuous process for the gaseous-phase preparation of trichlorotrifluoroethane, dichlorotetrafluoroethane and monochloropentafluoroethane in controlled proportions This invention relates to a continuous gaseous-phase process for the preparation of trichlorotrifluoroethane, dichlorotetrafluoroethane and monochloropentafluoroethane, in predetermined proportions, from tetrachloroethylene, chlorine and hydrofluoric acid... | 08/12/1986 |
| 4547483 | Catalysts for fluorination and/or dismutation reactions on halogenated hydrocarbons, and a process for their preparation A process is specified for preparing a chromium- and magnesium-containing catalyst for fluorination reactions by precipitating chromium(III) hydroxide. In this process, 1 mole of a water-soluble chromium(III) salt is reacted with at least 1.5 moles of mag... | 10/15/1985 |
| 4374289 | Production of monofluorotrichloroethane 1-Fluoro-1,1,2-trichloroethane is produced by a process which comprises the reaction of trichloroethylene with hydrogen fluoride using about 1.5 to 3.5 moles of hydrogen fluoride per mole of trichloroethylene, and conducting the reaction in the presence o... | 02/15/1983 |
| 4264530 | Process for preparing high purity tetrafluoromethane A process for preparing high purity tetrafluoromethane which comprises the steps of (a) passing a gaseous mixture of chlorotrifluoromethane and hydrogen fluoride in a molar proportion of 1:1 to 1:10 through a catalyst layer of chromium oxyfluoride at a te... | 04/28/1981 |
| 4158675 | Manufacture of halogenated compounds Manufacture of 1,1,1,2-tetrafluoroethane by reacting 1,1,1-trifluoro-2-chloroethane with hydrogen fluoride in the presence of a chromium oxide catalyst and removing 1,1-difluoro-2-chloroethylene contaminant from the resulting impure asym tetrafluoroethane... | 06/19/1979 |
| 4158023 | Process for the manufacture of octafluoropropane Octafluoropropane, C3 F8, is prepared by a two-step process. In the first step hexafluoropropene is reacted with hydrogen fluoride in the presence of a chromium oxyfluoride catalyst. The 2H-heptafluoropropane obtained is reacted with... | 06/12/1979 |
| 4147733 | Fluorination of chlorinated hydrocarbons Chlorine atoms in chlorinated lower aliphatic hydrocarbons are replaced by fluorine in the vapor phase reaction of the chlorinated hydrocarbons with aqueous HF at 275° C.- 425° C. in the presence of a metal fluoride catalyst, particularly where the meta... | 04/03/1979 |
| 4145311 | Process for reactivating fluorination catalysts Chromoxyfluoride catalysts which are used for converting chlorocarbons with hydrogen fluoride into fluorochlorocarbons lose a part of their activity over a period of time. Reactivation of the catalysts occurs upon treatment with fluorine at temperatures o... | 03/20/1979 |
| 4139568 | Process for making methyl fluoride Methanol and aqueous HF react in the vapor phase at 250° C.-400° C. in the presence of activated carbon, nickel fluoride, chromium fluoride, aluminum fluoride, or a mixture thereof to produce methyl fluoride plus dimethyl ether as the principal by-produ... | 02/13/1979 |
| 4052468 | Process for the production of chlorofluorinated cycloaliphatic hydrocarbons Chlorofluorinated cycloaliphatic hydrocarbons may be effectively produced by an oxychlorofluorination process by reacting a gaseous mixture of a starting material selected from a cycloaliphatic hydrocarbon and a cycloaliphatic hydrohalocarbon in which the... | 10/04/1977 |
| 4009214 | Separation of hydrogen fluoride from hydrogen chloride gas Hydrogen chloride gas, containing hydrogen fluoride and/or silicon tetrafluoride, is contacted with calcium chloride supported on activated alumina, to separate the hydrogen fluoride and/or silicon tetrafluoride therefrom.... | 02/22/1977 |
