Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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 |
| 6184293 | Molding composition based on fluoropolymers and process for producing foam material therefrom The invention relates to a molding composition based on fluoropolymers which additionally contain from 1 to 50% by weight of at least one polymer containing sulfoxide groups. The polymer containing sulfoxide groups comprises, in particular, polyarylene su... | 02/06/2001 |
| 6040375 | Composite foams, processes for their preparation and their use The invention relates to a composite foam comprising from 10 to 90% by volume of SiO2 aerogel particles and from 90 to 10% by volume of a foam, preferably a polyurethane and/or polyolefin foam, a process for its preparation and its use.... | 03/21/2000 |
| 6025153 | Selectable vectors for human T cells Selectable Herpesvirus saimiri vectors which have a selection gene inserted into a junction region of the L- and H-DNA are described. Vectors of this type are able persistently to infect human T cells and thus are suitable for the expression of foreign ge... | 02/15/2000 |
| 6020444 | Process for preparing a cycloolefin copolymer The present invention relates to a process for preparing a cycloolefin copolymer by polymerization of at least one cyclic olefin and at least one acyclic olefin in the presence of a catalyst comprising at least one metallocene compound of the formula I, ... | 02/01/2000 |
| 5955041 | Natural circulation reactor and use for producing linear and cyclic acetals This invention relates to a reactor 1 for the continuous production of linear or cyclic acetals, in particular trioxane, dioxolane, tetroxane, dimethoxymethane, diethoxymethane, diethoxyethane and dibutoxyethane. This reactor has internal adjacently arran... | 09/21/1999 |
| 5840993 | Water-soluble cobalt catalysts, process for their preparation and their use as hydro-formylation catalysts in a two-phase system with polyethylene glycol as the polar phase The invention relates to cobalt carbonyl catalysts of the formula (I) ##STR1## where R is --CH(CH2 OCH2 CH3)2 or --C2 H4 (OCH2 CH2)n OY, with n=1 to 12 and ... | 11/24/1998 |
| 5763719 | Thermally stable fullerene derivatives and process for producing the same A fullerene derivative of the formula I ##STR1## where the symbols and indices have the following meanings: F is a fullerene radical of the formula (C20+2m), where m is a number from 1 to 50 R1 to R8 are identical or ... | 06/09/1998 |
| 5750221 | Abrasion-resistant fluoropolymer mixtures An abrasion-resistant fluoropolymer mixture comprising (A) from 75 to 99% by weight of a fluorocarbon polymer (B) from 1 to 25% by weight of an oxidized polyarylene sulfide and, based on the sum (A)+(B), (C) from 0 to 15% by weight of a filler, is used for the prod... | 05/12/1998 |
| 5744021 | 2-alkylmercapto-4-(trifluoromethyl)benzoic esters and a process for their preparation The invention relates to 2-alkylmercapto-4-(trifluoromethyl)benzoic esters of the formula (II), in which R1 and R2 are, independently of each other, (C1 -C6) alkyl, and a process for their preparation, which com... | 04/28/1998 |
| 5741931 | Phosphepinium salts Phosphepinium Salts Thereof The present invention relates to phosphonium salts of the formula (I) ##STR1## in which Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH2 group is arranged in the ortho ... | 04/21/1998 |
| 5736603 | Electrically conductive thermoplastic composite materials and a process for their preparation The invention relates to electrically conductive thermoplastic composite materials which have specific volume resistances of less than 109 ohm cm and comprise 0.1 to 70% by volume of electrically conductive fibers impregnated with a thermoplast... | 04/07/1998 |
| 5731365 | Hydrophilic, highly swellable hydrogels The present invention relates to hydrophilic, highly swellable hydrogels which are coated with non-reactive, water-insoluble film-forming polymers.... | 03/24/1998 |
| 5728886 | Compounds of the phosphine group, their preparation and their use Phosphines of the formula (I) and the preparation of these phosphines ##STR1## where Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, the CH2 group and the CH3 radical are each in the ortho ... | 03/17/1998 |
| 5710330 | Process for preparing alkanephosphonic anhydrides Process for preparing alkanephosphonic anhydrides of the formula (I) ##STR1## where R is straight-chain or branched unsubstituted C1 -C6 -alkyl and nࣙ3, which comprises pyrolytically eliminating water from an alkanephosphonic ... | 01/20/1998 |
| 5698755 | Process for preparing aromatic olefins using palladacycle catalysis The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## by reaction of haloaromatics of the formula (II) ##STR2## with olefins of the formula (III) ##STR3#... | 12/16/1997 |
| 5693842 | Process for preparing phosphorus-containing dicarboxylic acids alkyl esters thereof The invention relates to a process for preparing phosphorus-containing compounds of the formula I ##STR1## in which R1 and R2 are an alkyl radical having 1 to 8 carbon atoms, a cyclohexyl radical, a cyclopentyl radical, an aryl ... | 12/02/1997 |
| 5665665 | Method for making supported catalyst systems and catalyst systems therefrom Catalyst systems and methods for supporting catalysts and their components, particularly metallocene catalyst components, are provided. The method involves teqhniques for evenly distributing a small volume of catalyst component over and among a porous sup... | 09/09/1997 |
| 5663268 | Syndiotactic propylene copolymers A syndiotactic propylene copolymer is obtained in high yields by copolymerization of propylene with small amounts of other olefins in the presence of a catalyst comprising a metallocene of the formula I ##STR1## in which M1 is titanium, zi... | 09/02/1997 |
| 5661096 | Catalysts and cocatalysts for the preparation of polyolefins In the case of Ziegler catalysts based on a metallocene as the transition metal component and an aluminoxane as the activator, preactivation of the metallocene with the aluminoxane results in a considerable increase in the activity of the catalyst system.... | 08/26/1997 |
| 5650537 | Process for the preparation of N-acyl--amino acid derivatives A process for the preparation of N-acylglycine derivatives of the formula (I) ##STR1## which comprises reacting a carboxylic acid amide with an aldehyde in the presence of a solvent and an acid to give an acylaminomethylol and then carbonylating... | 07/22/1997 |
| 5648547 | Bis-phosphepines and processses for their preparation The invention relates to bis-phosphepines of the formula (I): ##STR1## where: Ar--Ar is biphenyl, 1,1'-binaphthyl or 1-phenylnaphthyl, R1 independently of one another are F, (C1 -C8)-alkyl or (C1 -C8)... | 07/15/1997 |
| 5646234 | Production of fibers or films using specific forming solutions and the fibers of films obtainable thereby A process for producing fibers or films by the steps of: a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol... | 07/08/1997 |
| 5634949 | Prevention of fabric hand harshening on printing of dyeing cellulosic textiles Cellulosic textiles are printed or dyed with multiple hook reactive dyes without fabric hand harshening on using a reactive dye preparation containing 0.5 to 10% by weight of a surfactant and 0 to 10% by weight of an antifoaming agent.... | 06/03/1997 |
| 5631403 | Process for the preparation of hydroxycarboxanilides The present invention relates to a process for the preparation of hydroxycarboxanilides of the formula (1) ##STR1## in which R1 and R2 are identical or different and are hydrogen, halogen, a nitro group, a cyano group, a straigh... | 05/20/1997 |
| 5616683 | Process for maintaining of improving the mechanical properties of fibers of aromatic copolyamides in alkaline media and shaped articles containing such fibers A process for maintaining or increasing the tensile strength of fibers of aromatic copolyamides which are formed from a major portion of para-monomers and are soluble in organic aprotic and polar solvents. The process involves storing the fibers in alkali... | 04/01/1997 |
| 5591893 | Process for the preparation of polycarboxylic acids and derivatives thereof The invention relates to a process for the preparation of polycarboxylic acids and derivatives thereof, the polycarboxylic acids prepared containing at least three carboxyl groups, comprising the steps (A) introducing one or more organic compounds, which conta... | 01/07/1997 |
| 5591888 | Process for producing tert.-butyl chloroacetate To produce tert-butyl chloroacetate by addition of chloroacetic acid to isobutene, the reaction is carried out in the absence of catalysts and solvents in a pressure vessel at a temperature of 80° to 110° C. under the pressure which establishes itself o... | 01/07/1997 |
| 5575821 | Process for the preparation of a modified fiber material and process for the dyeing of the modified material with anionic textile dyes A process for the dyeing of fiber materials with water-soluble anionic dyes, in particular those having a fiber-reactive group, is described, according to which dyeing is carried out using low-electrolyte or entirely electrolyte-free and/or low-alkali or ... | 11/19/1996 |
| 5534604 | Copolymers based on ethylenically unsaturated dicarboxylic anhydrides, long-chain olefins and fluoroolefins Copolymers based on ethylenically unsaturated dicarboxylic anhydrides, long-chain olefins and fluoroolefins Copolymers containing 10 to 60% by weight of bivalent structural units of the formula A ##STR1## wherein R1 and R2, inde... | 07/09/1996 |
| 5520860 | Process for preparing granular sodium silicates To prepare a compacted, granular sodium silicate having an SiO2 /Na2 O molar ratio of 1.7:1 to 4.1:1, sodium silicate having a median particle diameter of | 05/28/1996 |
| 5510377 | Sterilant gas mixture comprising alkylene oxide and 1,1,1,2,3,3,3-heptafluoropropane A sterilant gas mixture is presented for cold-gas sterilization, which comprises alkene oxide and 1,1,1,2,3,3,3-heptafluoropropane. The sterilant gas mixture comprises from 12 to 22 mol % of ethylene oxide or propylene oxide and from 78 to 88 mol % of 1,1... | 04/23/1996 |
| 5507972 | Process for the preparation of a mixture of sodium silicates and other salts and the use of the mixture To prepare a mixture of sodium silicates having lamellar structure and sodium carbonate peroxohydrate, sodium silicate composed essentially of δ-Na2 Si2 O5 is reacted at least partially with carbon dioxide and atomized wa... | 04/16/1996 |
| 5492563 | Fine division in the preparation of copper phthalocyanine pigments Copper phthalocyanine pigments are finely divided in an ecologically and economically advantageous manner by first of all subjecting crude, coarsely crystalline copper phthalocyanine pigments to dry milling and then wet milling the finely divided prepigme... | 02/20/1996 |
| 5476976 | Process for preparing fluoronitrobenzenes Fluoronitrobenzenes are prepared in an advantageous way from the corresponding chloronitrobenzenes and an alkali metal fluoride by means of a chlorine-fluorine exchange reaction with replacement of a chlorine atom by a fluorine atom, by catalyzing the rea... | 12/19/1995 |
| 5476963 | Supported catalyst, process for its preparation and its use for the preparation of vinyl acetate Supported catalyst, process for its preparation and its use for the preparation of vinyl acetate The invention relates to improved Pd/K/Au, Pd/K/Ba and Pd/K/Cd supported catalysts, their preparation and their use for the preparation of vinyl acetate from ... | 12/19/1995 |
| 5475169 | Process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane Process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane The invention relates to a process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane (R 227) in which the contaminated R 227 is brought into co... | 12/12/1995 |
| 5474658 | Electrochemical process for preparing glyoxylic acid The present invention describes a process for preparing glyoxylic acid by electrochemical reduction of oxalic acid in aqueous solution in divided or undivided electrolytic cells, wherein the cathode comprises carbon or at least 50% by weight of at least o... | 12/12/1995 |
| 5475060 | Cycloolefin block copolymers and a process for their preparation Cycloolefin block copolymers and a process for their preparation Cycloolefin block copolymers, which in particular are suitable as phase promoters, are preferably obtained by copolymerization of polycyclic olefins, such as norbornene, with acyclic olefins... | 12/12/1995 |
| 5455365 | Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligands Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligands A highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of... | 10/03/1995 |
| 5455366 | Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of t... | 10/03/1995 |
