Did You Know...
...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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 |
| 7705190 | Method of making an aromatic polyether composition using phosphazenium salt phase transfer catalysts A method for carrying out a chemical reaction between at least two reactants occupying separate phases within a multiphase reaction mixture has been discovered in which at least one phosphazenium salt is employed as a phase transfer catalyst. The remarkable utility ... | 04/27/2010 |
| 7422702 | Benzene derivative having long, linear conjugated structure, process for producing benzene derivative, and liquid-crystal material The present invention provides, in a method for transporting charge using the molecular orientation in a liquid-crystalline state, a novel benzene derivative having a long, linear conjugated structure expected to have satisfactory charge-transport properties without... | 09/09/2008 |
| 7420074 | Process for fluoro derivative-substituted aryl pnictogens and their oxides A process to prepare substituted aryl pnictogen derivatives comprising contacting a fluoropolyether or fluoroalkyl primary bromide or iodide, with a pnictogen derivative such as triaryl phosphine, triaryl arsine, or triaryl stibine or triaryl phosphine oxide, triary... | 09/02/2008 |
| 7396948 | Process for fluoro derivative-substituted aryl pnictogens and their oxides A process to prepare substituted aryl pnictogen derivatives comprising contacting a fluoropolyether or fluoroalkyl primary bromide or iodide, with a pnictogen derivative such as triaryl phosphine, triaryl arsine, or triaryl stibine or triaryl phosphine oxide, triary... | 07/08/2008 |
| 7238455 | Positive-working photosensitive resin composition, method for producing pattern-formed resin film, semiconductor device, display device, and method for producing the semiconductor device and the display device The invention provides a positive-working photosensitive resin composition comprising an alkali soluble resin (A), a diazoquinone compound (B) and a compound (C) which contains a —CH2OH group but not a phenolic hydroxyl group, a method for producing a p... | 07/03/2007 |
| 7049377 | 1,3-diethers and components and catalysts for the polymerization of olefins, containing said diethers Cyclopolyenic 1,3-diethers wherein the carbon atom in position 2 belongs to a particular cyclic or polycyclic structure containing two or three unsaturations, solid catalyst components and catalysts therefrom, the catalysts comprising the reaction product of: ... | 05/23/2006 |
| 7034152 | Process for preparing the antiviral agent [1S-(1alpha,3 alpha,4beta )]-2-amino-1,9-dihydro-9-[4-hydroxy-3-(hydroxymethyl)-2-methylenecyclopentyl]-6H-purin-6-one Processes are disclosed for preparing the antiviral agent entecavir. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various intermediates useful in the preparation of entecavir are also disclosed. ... | 04/25/2006 |
| 7022640 | 1,3-diethers and components and catalysts for the polymerization of olefins, containing said diethers Cyclopolyenic 1,3-diethers wherein the carbon atom in position 2 belongs to a particular cyclic or polycyclic structure containing two or three unsaturations, solid catalyst components and catalysts therefrom, the catalysts comprising the reaction product of: ... | 04/04/2006 |
| 6943271 | Process for producing fluorine-containing, polymerizable styrene monomer and intermediates used in same A fluorine-containing styrene monomer of the formula (2) is produced by a first, second or third process. The first process includes (a) reacting a compound of the formula (1) with a compound of the formula (3), in the presence of a metal catalyst; (b) reacting the ... | 09/13/2005 |
| 6939845 | Fragrance precursors The present invention provides a fragrance precursor of formula I: that is capable of forming a fragrant ketone of formula II: and a fragrant lactone of formula III: | 09/06/2005 |
| 6906226 | Hydroxymethyl-substituted polyfunctional phenols Hydroxymethyl-substituted polyfunctional phenols, expressed by the following structure: General structure (I) (wherein X represents: bivalent group (a) expressed by the following structure: General ... | 06/14/2005 |
| 6844461 | Synthesis of A-ring synthon of 19-NOR-1α,25-dihydroxyvitamin D3 from (D)-glucose The present invention provides a method for the synthesis of an A-ring synthon phosphine oxide used in the preparation of 19-nor vitamin D compounds, and to novel synthetic intermediates formed during the synthesis. The new method prepares the phosphine oxide from (... | 01/18/2005 |
| 6753444 | Method for producing 2,3,5,6-tetrahalogen-xylyidene compounds The invention relates to a process for preparing 2,3,5,6-tetrahaloxylylidene compounds of formula (I) where each Hal is independently fluorine or chlorine, and X is fluorine, chlorine, bromine, —O—R, or —O—C(═O... | 06/22/2004 |
| 6683219 | Synthesis of A-ring synthon of 19-nor-1,25-dihydroxyvitamin D3 from (D)-glucose The present invention provides a method for the synthesis of an A-ring synthon phosphine oxide used in the preparation of 19-nor vitamin D compounds, and to novel synthetic intermediates formed during the synthesis. The new method prepares the phosphine o... | 01/27/2004 |
| 6620977 | Process for producing butanetriol derivative A process for preparing a butanetriol derivative of the formula (1) useful as intermediates of medicines ##STR1## wherein R1 is the same defined below, which comprises reacting a compound of the formula (3) ##STR2## wherein R1 a... | 09/16/2003 |
| 6617475 | Preparation of optically active -hydroxyethers Optically active -hydroxyethers are prepared from prochiral -ketoethers by heterogeneous hydrogenation using platinum catalysts in the presence of a chiral nitrogen base in high chemical and optical yields, since this type of hydrogenation s... | 09/09/2003 |
| 6552088 | Biphenyl derivatives Biphenyl substituted amides with activity as antagonists of the neurokinin 1 (NK-1, substance P) receptor.... | 04/22/2003 |
| 6552213 | Stereoselective route to produce tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene, an intermediate in the synthesis of trans-resveratrol The present invention relates to a new stereoselective method for the preparation of tris-O-substituted-(E)-1-(3,5-dihydroxyphenyl)-2-(4-hydroxyphenyl)ethene derivative of the formula (I) which is a key intermediate in the synthesis of trans-resverat... | 04/22/2003 |
| 6518314 | Pharmaceutical agents that impede the initiation and progression of primary and secondary DMS disruptions Compositions comprising a pharmaceutically effective amount of a compound that impedes disruption of intact dense microspheres (DMS) by acting on DMS either to prevent disruption, or if disrupted, act on pre-disrupted DMS in such a way that, when the comp... | 02/11/2003 |
| 6515163 | Hydrogenated phenanthrenes and their use in liquid-crystal mixture The invention concerns hydrogenated phenanthrenes of formula I ##STR1## wherein the parameters have the meanings given in the text and their use in liquid crystal compositions.... | 02/04/2003 |
| 6461876 | Chemiluminescent 1,2-dioxetanes The present invention provides novel 1,2-dioxetanes derived from spiro-fused ketones with or without π-electrons in the ring or with carbon-carbon double bond(s) in the spiro-fused ring. Additionally, these new dioxetanes have electron donating or withdr... | 10/08/2002 |
| 6423753 | Use of colchinol derivatives as vascular damaging agents Colchinol derivatives of formula ##STR1## wherein R1, R2, R3 and R6 are each independently H, optionally substituted alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, alkanoyl, PO3 H2 ; X is ca... | 07/23/2002 |
| 6410802 | Methods for synthesizing ether compounds and intermediates therefor The present invention relates to novel ether compounds, compositions comprising ether compounds, and methods useful for treating and preventing cardiovascular diseases, dyslipidemias, dysproteinemias, and glucose metabolism disorders comprising administer... | 06/25/2002 |
| 6391916 | Enediyne derivatives Novel C3 -substituted cyclodeca-1,5-diynes can be prepared through novel synthetic procedures using starting (E)-C3 -substituted-4-(aryl- or heteroarylmethylidene)cyclodeca-1,5-diynes reagents. Both the C3 -substituted cyc... | 05/21/2002 |
| 6320085 | Process for the preparation of benzyl-ethers ##STR1## The subject matter of the invention is the process for the preparation of mixed ethers of formula I, wherein Ar represents an aromatic or one or more heteroatom-containing moiety, optionally substituted by one or more C1-4 alkoxy, meth... | 11/20/2001 |
| 6291721 | Processes for the preparation of 2-arylvinyl alkyl ether and 1,4-diaryl-2-fluoro-2-butene compounds An improved process for the preparation of 2-arylvinyl alkyl ether compounds of the structural formula I ##STR1## In addition, the present invention provides an improved process for the preparation of 1,4-diaryl-2-fluoro-2-butene compounds of the structur... | 09/18/2001 |
| 6281250 | Retinyl ethers, derivatives and analogues and inhibition of breast carcinogenesis The present invention is directed to retinyl ethers, derivatives and analogues and their use in inhibiting breast carcinogenesis or breast cancer cell growth.... | 08/28/2001 |
| 6277867 | Pesticide compounds, compositions and process for the preparation thereof The invention relates to compounds of general formula (I), their optically active isomers and salts wherein Ar=alycylic, aromatic or one or more heteroatom containing heterocyclic moiety, optionally substituted by one or more alkoxy-, methylenedioxy-, alk... | 08/21/2001 |
| 6211387 | Diol compounds as intermediates for preparing antimycotic compounds A compound of formula (II), wherein R1 is chloro, fluoro or trifluoromethyl; R2 is hydrogen, chloro, fluoro or trifluoromethyl; and R is hydrogen or a protective group for the hydroxy moiety useful as an intermediate for the synthesi... | 04/03/2001 |
| 6207835 | Process for the preparation of arylmetal compounds and their reaction with electrophilic reagents Arylmetal compounds are prepared by deprotonation of aromatics which have a hydrogen atom in the ortho position relative to a halogen atom or a trifluoromethoxy group, using a suitable base or by halogen-metal exchange of haloaromatics using a suitable me... | 03/27/2001 |
| 6080784 | Protein kinase C modulators N Compositions with protein kinase C-modulatory, anti-inflammatory and other activities are disclosed.... | 06/27/2000 |
| 6025310 | Organic compounds suited to lubricating films on magnetic recording media The invention provides novel organic compounds, and more particularly those having excellent lubricity, compatible with lubricating organic compounds having a benzene ring and a phosphazine ring and retaining stability free of hydrolysis for a prolonged p... | 02/15/2000 |
| 5874642 | Bis ethers containing a 2,2'-biaryl radical and a process for their preparation The present invention relates to compounds of the formula (I) ##STR1## in which R1, R2 and R3 are identical or different and, independently of one another, are hydrogen, an alkyl or alkoxy group having 1 to 4 carbon a... | 02/23/1999 |
| 5827929 | Functionalized initiators for anionic polymerization A process for the preparation of hydrocarbon solutions of monofunctional ether initiators of the following general structure: M--Z--O--C(R1 R2 R3) wherein M is an alkali metal; Z is a branched or straight chain hydrocarbon grou... | 10/27/1998 |
| 5763681 | Synthesis of stable, water-soluble chemiluminescent 1,2-dioxetanes and intermediates therefor A novel synthesis of compound having the formula: ##STR1## wherein T is a stabilizing spiro-linked polycycloalkylidene group, R3 is a C1 -C20 alkyl, aralkyl or heteroatom containing group, Y is an aromatic fluorescent... | 06/09/1998 |
| 5728796 | Process to react epoxide-containing compounds and aliphatic alcohols A process reaction between: (1) a compound that contains one or more epoxide moieties per molecule, and (2) a compound that contains one or more primary aliphatic hydroxyl groups per molecule; is catalyzed by: (3) a catalyst compound containing one or mor... | 03/17/1998 |
| 5723694 | Process for preparing monomethylated or dimethylated phenols Phenols monomethylated or dimethylated in the ortho or para position to the OH group and having the formula ##STR1## can be prepared by reaction of tert-alkyl-substituted phenols of the formula ##STR2## in which at least one free ortho or p... | 03/03/1998 |
| 5698727 | 1,2-dioxetane derivatives, intermediates for syntheses thereof and methods of producing the intermediates A chemiluminescent 1,2-dioxetane derivative having a formula (I): ##STR1## wherein R1 and R4 each represent, individually, hydrogen, an alkyl group, an alkoxyl group, a hydroxyl group, or --OSi(R9 R10 R | 12/16/1997 |
| 5693251 | Optically active benzene derivatives, process for producing the same and liquid-crystalline composition containing said derivatives as liquid-crystalline compound and light switching elements An optically active phenol useful in the preparation of liquid crystalline compounds which is represented by the formula (V): ##STR1## wherein R2 represents an alkyl or alkoxyalkyl group having 1 to 20 carbon atoms optionally substituted b... | 12/02/1997 |
| 5686020 | Mesomorphic compound, liquid crystal composition, liquid crystal device, display apparatus and display method A mesomorphic compound represented by the following formula (I): ##STR1## wherein R1 denotes a linear or branched alkyl group having 1-18 carbon atoms capable of including one or non-neighboring two or more methylene groups which can be re... | 11/11/1997 |
