Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush 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 |
| 6398922 | Photochemical gas-liquid process for halogenating alkylbenzenes The invention provides a process for carrying out a photochemical gas-liquid process for halogenating alkylbenzenes, the process being carried out in a photochemical gas-liquid reactor comprising a vessel, a central source of radiation, a gas distributor,... | 06/04/2002 |
| 5821393 | Process for the preparation of aromatic bromoalkyl-substituted hydrocarbon compounds The present invention relates to a process for the preparation of an aromatic bromoalkyl-substituted hydrocarbon compound, in which an alkyl-substituted aromatic hydrocarbon compound is reacted with a brominating agent in the presence of water.... | 10/13/1998 |
| 5674949 | Liquid-phase fluorination This invention pertains to a method for liquid-phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/07/1997 |
| 5571870 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 11/05/1996 |
| 5539059 | Perfluorinated polyethers This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.... | 07/23/1996 |
| 5514254 | Procedure for the photochlorination of alkyl-aromatic compounds An alkyl-aromatic compound is selectively photochlorinated in the side chain in a cyclic reaction system wherein said compound is continuously circulated between a container and photochlorination reactor. The compound is partially chlorinated after each passag... | 05/07/1996 |
| 5461117 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 10/24/1995 |
| 5332790 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 07/26/1994 |
| 5322904 | Liquid-phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 06/21/1994 |
| 5279719 | Method for chlorination of methylated aromatic compounds A process for chlorination of methylated aromatic compounds in a titanium tetrachloride is disclosed. The ring chlorination is first carried out by reacting said methylated aromatic compounds with chlorine gas under reduced light conditions, and then the ... | 01/18/1994 |
| 5235119 | Nitrocubanes An efficient direct functionalization of nitrocubanes has been achieved by irradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.... | 08/10/1993 |
| 5214221 | Nitrocubanes An efficient direct functionalization of nitrocubanes has been achieved by rradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.... | 05/25/1993 |
| 5214222 | Nitrocubanes An efficient direct functionalization of nitrocubanes has been achieved by rradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.... | 05/25/1993 |
| 5092971 | Bromination Selective bromination of alkylarenes to the alpha monobrominated derivative is desirable as a precursor for the selective production of, for example, the corresponding alcohols. The product can be obtained by a photolytic reaction between the substrate, h... | 03/03/1992 |
| 5093432 | Liquid phase fluorination This invention pertains to a method for liquid phase fluorination for perfluorination of a wide variety of hydrogen-containing compounds.... | 03/03/1992 |
| 5080767 | Process for preparing aromatic compounds having chlorinated side chains and method for stabilizing monochloro-side chain aromatic compounds Photochlorination of aromatic compounds having at least one alkyl side chain is carried out in the presence of an alkylene polyamine previously mixed with an aromatic compound having at least one chlorinated side chain whereby side reactions are suppresse... | 01/14/1992 |
| 4943358 | Oxidation process It is desired to find an alternative way to produce benzophenones or substituted benzophenones which does so selectively and avoids the problems of previous methods that use, for example, large amounts of an aluminium chloride catalyst or nitric acid. In ... | 07/24/1990 |
| 4923580 | Bromination Selective bromination of alkylarenes to the alpha dibrominated derivative is desirable as a precursor for the selective production of, for example, the corresponding aromatic aldehyde. Improvements in the extent of selectivity of the product and/or its rate of... | 05/08/1990 |
| 4686024 | Novel perfluoro chemicals and polyfluorinated compounds and process for production of the same The present invention relates to novel perfluoro chemicals (PFC), particularly perfluorocyclic ethers and polyfluorinated compounds containing a few chlorine atoms and to a method for the preparation thereof.... | 08/11/1987 |
| 4684452 | Process for the fluorination in liquid phase of unsaturated compounds Process for the fluorination with elemental fluorine of fluorinated olefins, carried out in liquid phase using a perfluoropolyether as solvent, at temperatures comprised within the range of from -25° C. to +120° C., by using gaseous fluorine diluted wit... | 08/04/1987 |
| 4594133 | Process for preparing 3'-halodiphenylethers This process relates to the halodecarboxylation of 3'-carboxydiphenylethers utilizing mercuric oxide, molecular halogen, and light in an inert atmosphere at moderate temperatures and at atmospheric pressure to afford 3'-halodiphenylethers.... | 06/10/1986 |
| 4025408 | Deuterium separation by infrared-induced addition reaction A method for deuterium enrichment by the infrared-induced addition reaction of a deuterium halide with an unsaturated aliphatic compound. A gaseous mixture of a hydrogen halide feedstock and an unsaturated aliphatic compound, particularly an olefin, is ir... | 05/24/1977 |
| 3948742 | Preparation of polychlorcyclopentane and hexachlorcyclopentadiene Polychlorcyclopentane and hexachlorcyclopentadiene are prepared by reacting liquid chlorinated cyclopentane with gaseous chlorine in the presence of an electromagnetic radiation and optionally by a subsequent reaction of these higher chlorinated cyclopent... | 04/06/1976 |
