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 |
| 7402712 | Adamantyl vinyl ether compound and production process for the same Provided by the present invention are an adamantyl vinyl ether compound which is useful as a monomer for functional resins in the photolithography field or a raw material therefor and medical and agricultural intermediates and a production process for the same. ... | 07/22/2008 |
| 7319173 | Process for preparing fluorohalogenethers A process for preparing (per)fluorohalogenethers having general formula: wherein: A and A′, equal to our different from each other, are selected among Cl, Br, H; m=1, 2; n=0, 1; R1 is a flu... | 01/15/2008 |
| 7256316 | Fluorine-containing vinyl ethers, their polymers, and resist compositions using such polymers A fluorine-containing vinyl ether represented by formula 1, wherein R represents an organic group containing at least one fluorine atom and a cyclic structure is provided. A fluorine-containing copolymer containi... | 08/14/2007 |
| 7232795 | Derivatives of decahydro-cycloprop[e]indene compounds and their use in perfume compositions The present invention is directed to novel substituted cyclopropane ethers compounds of the general formulae selected from the group consisting of R and R1 independently represent a hydro... | 06/19/2007 |
| 7172989 | Catalytic hydrogenation over rhenium-containing catalysts supported on activated carbon In a process for preparing alcohols by catalytic hydrogenation of carbonyl compounds over a catalyst comprising rhenium on activated carbon, the catalyst used comprises rhenium (calculated as metal) in a weight ratio to the activated carbon of from 0.0001 to 0.5, pl... | 02/06/2007 |
| 7166731 | Method of preparing fulvene compounds and method of preparing ansa-metallocene compounds using the compounds There are provided a method of simply preparing a 1,4,6-substituted, 1,4-substituted, 1,6-substituted, or 1-substituted fulvene compound, the intermediates of the fulvene compound, and a method of preparing an ansa-metallocene compound in which two cyclopentadienyl ... | 01/23/2007 |
| 7160967 | Fluorovinyl ethers and polymers obtainable therefrom Fluorovinyl ethers having the formula CFX═CXOCF2OR, wherein R is a C2–C6 linear, branched or C5–C6 cyclic (per)fluoroalkyl group, or a C2–C6 linear, branched (per)fluoro oxyalkyl gr... | 01/09/2007 |
| 7138550 | Bridged carbocyclic compounds and methods of making and using same Disclosed herein is a fluorinated bridged carbocyclic compound that can be polymerized by itself or with at least one other ethylenically unsaturated monomer to provide a polymer. The polymer may be used, for example, within a sub-300 nm photoresist composition. Als... | 11/21/2006 |
| 7109383 | Fluorine-containing allyl ether compounds, their copolymers, and resist compositions and anti-reflection film materials using such copolymers The invention relates to a fluorine-containing allyl ether compound represented by the formula 1, wherein R represents an organic group containing at least one fluorine atom and an alicyclic structure. The invent... | 09/19/2006 |
| 7101955 | Synthesis of energetic thermoplastic elastomers containing both polyoxirane and polyoxetane blocks This thermoplastic elastomer is present in a substantially solid state suitable for use as a binder for a propellant, explosive, and/or gas generant of a supplemental restraint system. The thermoplastic elastomer is formed from a composition including A blocks which... | 09/05/2006 |
| 7077960 | Method for obtaining a purified hydrofluoroalkane, purified hydrofluoroalkane, use of same and method for analysing same Process for the production of a hydrofluoroalkane, according to which hydrofluoroalkane comprising organic impurities is subjected to at least two distillations. ... | 07/18/2006 |
| 6858760 | Fluorine-containing cyclic compounds, fluorine-containing polymerizable monomers, fluorine-containing polymers resist compositions and patterning method A fluorine-containing cyclic compound is represented by the formula 1: wherein each of R1, R2 and R3 independently represents a hydrogen, alkyl group, fluorine,... | 02/22/2005 |
| 6653512 | Perfluoroalkyl haloalkyl ethers and compositions and applications thereof Described are compositions comprising perfluoroalkyl haloalkyl ethers and, optionally, surfactant; uses for perfluoroalkyl haloalkyl ether compounds and compositions thereof, optionally comprising surfactant; and perfluoroalkyl haloalkyl ethers.... | 11/25/2003 |
| 6566559 | Process for the production of isopropenyl methyl ether Process for the production of unsaturated ethers, in particular isopropenyl methyl ether (IPM), by pyrolysis of a ketal-containing or acetal-containing mixture, in particular dimethoxypropane (DMP), in the liquid phase in the presence of an organic carbox... | 05/20/2003 |
| 6559268 | Perfluoro group-containing compounds and hardened polymer of the same A perfluoro group-containing compound are represented by the following formula (I): ##STR1## --Rf-- is a perfluoro group; and --A represents --OH or a group: ##STR2## or --Cy F2y+1 or --Cz F2z-1 and a perfluoro ... | 05/06/2003 |
| 6465059 | Liquid-crystalline medium The invention relates to a liquid-crystalline medium one or more compounds of the general formula IA ##STR1## and one or more compounds of the formula IB ##STR2## R, R*, R**, z, L and Y are defined herein.... | 10/15/2002 |
| 6452060 | Method to prepare cyclopropenes The present invention relates to a method to prepare cyclopropenes.... | 09/17/2002 |
| 6312618 | Polar diphenyldiacetylene liquid crystals A new class of asymmetric polar diphenyldiacetylene liquid crystal compounds and method for preparation are disclosed. The new class of liquid crystal compounds comprises the basic structure: ##STR1## Wherein R1 is an alkenyl group having the g... | 11/06/2001 |
| 6310262 | Process for preparing retiferol derivatives A new process prepares retiferol derivatives of formula I: ##STR1## wherein A is --C .ident.C-- or --CH.dbd.CH--, and R1 and R2 are independently of each other lower alkyl or lower perfluoroalkyl, one version couples ketones of formula 1I... | 10/30/2001 |
| 6309561 | Liquid crystal compounds having a chiral fluorinated terminal portion Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion comprising (i) at least one chiral center, which can optionally be heteroatom-substituted; (ii) a terminal fluoroalkyl, fluoroether, perfluoroalkyl,... | 10/30/2001 |
| 6300526 | Hydro-fluoroalkylvinylethers and process for obtaining them Hydro-2,2-difluoroalkylvinylethers having the formula CF2.dbd.CH--O--R.sub.A (I) wherein RA is a radical containing fluorine, optionally containing halogens such as Cl, Br, I, hydrogen, functional groups CM, COOR', CON(R')2, S... | 10/09/2001 |
| 6184422 | Cyclohexanediol derivatives Compounds of formula I ##STR1## wherein X is C.dbd.CH2 or CH2 ; Y and Z are independently of each other hydrogen, fluorine or hydroxy; A is --C.tbd.C--, --CH.dbd.CH-- or --CH2 --CH2 --, R1 and R2 are... | 02/06/2001 |
| 6133472 | Fluorinated oxyvinyl compounds and methods of preparing and using same Fluorine containing oxyvinyl compounds characterized by having one or more oxyvinyl groups separated from fluorine containing groups by at least one alkylene group having 2-8 carbon atoms and by at least one oxygen atom in addition to the oxygen on the ox... | 10/17/2000 |
| 5998674 | Bromine compound production method Method of producing a bromine compound having an aliphatic unsaturated bond which includes reacting a compound having an aliphatic unsaturated bond represented by the following general formula (1) with bromine: R1 --O--Ar1 --Y--Ar2 | 12/07/1999 |
| 5972241 | Liquid crystal compounds having a chiral fluorinated terminal portion Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion containing at least one methylene group and optionally containing at least one catenary ether oxygen atom; (b) a saturated, chiral or achiral, hydro... | 10/26/1999 |
| 5969074 | Reaction of perfluoroolefins with Bis (Silyl) ethers to produce fluorinated compounds A reaction of perfluoroolefins with bis(silyl) ethers to produce novel partially fluorinated and perfluorinated copolymers and macrocyclic compounds is disclosed.... | 10/19/1999 |
| 5965779 | Fluorooxetane compound and process for its preparation The present invention provides processes for preparing 2,2,3,3,4-pentafluorooxetane and/or 2,2,3,3,4,4-hexafluorooxetane which comprises reacting 2,2,3,3-tetrafluorooxetane with fluorine gas, the process inhibiting decomposition of the oxetane ring during... | 10/12/1999 |
| 5911912 | Halovinyl ethers Halovinyl ethers of the general formula I ##STR1## in which R, A1, A2, A3, Z1, Z2, X1, X2, l, m and n are as defined herein are suitable as components of liquid-crystalline ... | 06/15/1999 |
| 5723682 | Difluorovinyl ethers The invention relates to difluorovinyl ethers of the general formula I ##STR1## in which R, A, X and m are as defined in claim 1, and to the use of these compounds as components of liquid-crystalline media, and to liquid-crystal and electro-optical d... | 03/03/1998 |
| 5705713 | Preparation of fluoro compounds Fluoro compounds are made by reaction of an activated oxy-acid ester or cyclic ether starting material with hydrogen fluoride in the presence of an organometallic compound.... | 01/06/1998 |
| 5651919 | Benzyl ether derivative and composition containing the same Disclosed are a benzyl ether derivative represented by the following formula (I), useful as a liquid crystal display material, and a liquid crystal composition containing the same and a liquid crystal display device utilizing the composition. ##STR1#... | 07/29/1997 |
| 5621144 | Fluorinated compounds as oxygen transport agents New compounds are described typically having the formula CH3 C(CH2 R)3 or ZCH2 C(CH2 R)3 where R is a fluorohydrocarbon or perfluorocarbon group, preferably containing 4-16 carbon atoms and... | 04/15/1997 |
| 5621147 | Trifluoro-2-(trans-4-substituted cyclohexyl) ethylenes and process for their production A 1,1,2-trifluoro-2-(trans-4-substituted cyclohexyl)ethylene of the formula (1): R--(A)m --Cy--CF=CF2 (1) wherein R is a C1-10 alkyl group, a halogen atom or a cyano group, provided that in the case ... | 04/15/1997 |
| 5554316 | Hexenediyne derivative and a liquid crystal composition A novel compound having superior characteristics as a liquid crystal material and having a good stability under usual use environment, and a composition having improved viscosity, optical anisotropy and other properties, and further a liquid crystal displ... | 09/10/1996 |
| 5545769 | Process for the manufacture of selected halogenated hydrocarbons containing fluorine and hydrogen and compositions provided therein A process is disclosed for the manufacture of product compounds of the formula HC(R1)2 C(R1)2 C(R2)2 H wherein each R1 is independently selected from the group consisting of H, F, Cl,... | 08/13/1996 |
| 5506309 | Perfluorinates polyethers This invention pertains to perfluoropolyethers and perhalogenated chlorofluoropolyethers that can be prepared by fluorinating addition polymers made by polymerizing epoxides.... | 04/09/1996 |
| 5486636 | Synthesis of 19-nor vitamin D compounds New compounds of the formula ##STR1## where Y' represents hydroxy, protected-hydroxy, O-tosyl, O-mesyl, bromine, chlorine, or iodine and X1 and X2 may independently represent hydrogen or a hydroxy-protecting group are useful as ... | 01/23/1996 |
| 5420359 | Chlorofluoroether compositions and preparation thereof Normally liquid chlorofluoroether compositions consisting or consisting essentially of one or a selected mixture of perhalogenated chlorofluoroether compounds are provided by direct fluorination of the corresponding chloroether or chlorofluoroether precur... | 05/30/1995 |
| 5356560 | 2-fluoroperfluoroalkylcyclohexene derivatives 2-Fluoroperfluoroalkylcyclohexene derivatives of the formula I ##STR1## where R is an alkyl or alkenyl radical having up to 18 carbon atoms which is unsubstituted or substituted by CN or by at least one halogen and in which one or more non-adjacent C... | 10/18/1994 |
| 5354901 | Perfluoro(cycloaliphatic methyleneoxyalkylene) carbonyl fluorides and derivatives thereof Perfluoro(cycloaliphatic methyleneoxyalkylene) compositions are provided. These compositions comprise perfluoro(cycloaliphatic methyleneoxyalkylene) carbonyl fluoride compounds having (a) a perfluorocycloaliphatic moiety which can have up to two perfluoro... | 10/11/1994 |
