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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7323608 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds One aspect of the present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-sulfur bond between the sulfur atom of a t... | 01/29/2008 |
| 7183438 | Catalysts and method for the production of amines Disclosed are catalysts, the catalytically active mass of which contains 22 to 40 percent by weight of oxygen-containing compounds of zirconium, calculated as ZrO2, 1 to 30 percent by weight of oxygen-containing compounds of copper, calculated as CuO, 15 ... | 02/27/2007 |
| 7115784 | Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds The present invention relates to copper-catalyzed carbon-heteroatom and carbon-carbon bond-forming methods. In certain embodiments, the present invention relates to copper-catalyzed methods of forming a carbon-nitrogen bond between the nitrogen atom of an amide or a... | 10/03/2006 |
| 7034186 | Preparation of an amine Process for preparing an amine by reacting a primary or secondary alcohol, aldehyde or ketone with hydrogen and a nitrogen compound selected from the group consisting of ammonia and primary and secondary amines in the presence of a catalyst whose preparation has inv... | 04/25/2006 |
| 6689914 | Preparation of amines The preparation of amines of the formula (I): R1 R2 CH--N R3 R4 (I) in which R1, R2, R3 and R4, independently of one another, are hydrogen, straight-chain or branched C1 | 02/10/2004 |
| 6525222 | Process for preparing amines Amines are prepared by reacting aldehydes or ketones at elevated temperature under elevated pressure with nitrogen compounds selected from the group of ammonia, primary and secondary amines, and with hydrogen in the presence of a catalyst, wherein the cat... | 02/25/2003 |
| 6403834 | Method for preparing tris(ether-amine) The invention concerns a method for preparing tris(ether-amines) of formula (I): N[A--O--(B--O)n --R]3 wherein R, A, B and n are as defined in Claim 1, comprising the reaction, in liquid phase, of an alkylene-glycol monoether of form... | 06/11/2002 |
| 6187957 | Preparation of amines Amines are prepared by reacting primary or secondary alcohols, aldehydes or ketones with nitrogen compounds selected from the group consisting of ammonia and primary and secondary amines at elevated temperatures and superatmospheric pressures in the prese... | 02/13/2001 |
| 6046359 | Catalysts for the amination of alkylene oxides, alcohols, aldehydes and ketones A catalyst comprises, based on the total weight of the catalyst, 0.1-6% by weight of cobalt, nickel or a mixture thereof, 0.001-25% by weight of ruthenium, 0-10% by weight of copper and 0-5% by weight of promoters on a porous metal oxide carrier. It preferably comprises... | 04/04/2000 |
| 5841001 | Process for the preparation of optically active 2-halo-1-(substituted phenyl) ethanol The present invention provides an industrially advantageous process for the preparation of an optically active 2-halo-1-(substituted phenyl)ethanol useful as medicines, agricultural chemicals or as intermediates thereof; and a simple process for the prepa... | 11/24/1998 |
| 5684132 | Preparation of protected amines or alkylated amino acids The present invention relates to a process for preparing protected amines or amino acids. The invention furthermore relates to the use of tocopheryl radicals or radicals derived therefrom as protective groups for amines and amino acids, and to compounds o... | 11/04/1997 |
| 5663442 | Process for the preparation of sulphones The invention relates to a process for the preparation of compounds of the formula ##STR1## characterized in that the radical X in sulphones of the formula X--(CH2 --CH2 --O)m --(CH2)n --SO2 | 09/02/1997 |
| 5371290 | Preparation of N,N-dialkarylamines A process for the preparation of N,N-dialkylarylamines (I) by reacting arylamines (II) with alcohols (IIIa) or dialkyl ethers (IIIb) in the presence of an oxygen acid of phosphorus or in the presence of an ammonium salt thereof as catalyst, comprises reac... | 12/06/1994 |
| 5202485 | Process for preparing N-alkylaminophenols A process for preparing an N-alkylaminophenol is disclosed, comprising subjecting an aminophenol to reductive alkylation with an aldehyde or a ketone in the presence of an organic solvent and hydrogen, wherein the reductive alkylation is carried out at a ... | 04/13/1993 |
| 5198592 | Hydrogenolysis reaction and catalyst suitable therefor The invention concerns a method of performing a chemical reaction in which hydrogenation and/or dehydrogenation occurs, in the presence of a supported catalyst comprising a carrier material with copper as active component and iron as a promotor. According... | 03/30/1993 |
| 5166440 | Process for the preparation of n-alkylated aromatic amines Aromatic amines, alkylated on the N-atom, can be prepared by catalytic alkylation of aromatic amines with alcohols or the corresponding ethers or by transalkylation with aromatic amines alkylated on the N-atom, whereby niobic acid or tantalic acid is used... | 11/24/1992 |
| 5159115 | Catalyzed gas-phase mono N-alkylation of aromatic primary amines Described are processes for the gas-phase mono N-alkylation of an aniline or an aminonaphthalene using a C1 to C5 aliphatic alcohol or ether over certain catalyst compositions based upon crystalline molecular sieves or amorphous sili... | 10/27/1992 |
| 5155271 | Process for the alkylation of aromatic amines The invention relates to a process for the preparation of compounds of the formula ##STR1## in which Q is substituted or unsubstituted C1 -C6 alkyl, A is a direct bond or a bridging member, s is the number 1 or 2, Z is a radical... | 10/13/1992 |
| 5118851 | Process of preparing mixtures of polyalkylenepolyamines and alkanolpolyamines A process of preparing a mixture of polyalkylenepolyamines and alkanolpolyamines comprising contacting a difunctional aliphatic alcohol with a primary or secondary aliphatic amine in the presence of a metal silicate catalyst wherein the metal is selected ... | 06/02/1992 |
| 5110928 | Preparation of N-aryl-substituted 2-aminoalkyl-2-hydroxyalkylamines and N-aryl-substituted piperazines N-Aryl-substituted 2-amino-alkyl-2-hydroxyalkylamines and N-aryl-substituted piperazines Ia and Ib respectively ##STR1## (Ar=aryl; R1 =hydrogen, methyl, identical or different, R2 =hydrogen, alkyl) are prepared by reacting an ... | 05/05/1992 |
| 5097071 | Supported copper catalyst, process for its preparation and process for the preparation of N-alkylated aromatic amines using this copper catalyst The novel copper catalyst on an Al2 O3 -containing carrier which is impregnated with compounds of manganese and of one or more rare earth metals, having a Cu content of 0.1-5% by weight, a total content of compounds of manganese and ... | 03/17/1992 |
| 5087754 | Process for the preparation of N,N-dialkylaniline N,N-dialkylanilines can be prepared by reacting the anilines on which they are based with lower alcohols or with the corresponding ethers, at an increased temperature in the gas phase in the presence of a proton-containing zeolite catalyst of the pentasil... | 02/11/1992 |
| 5068434 | Process for the preparation of N-alkylated anilines N-alkylated anilines can be prepared by reaction of anilines with lower alcohols or dialkyl ethers at elevated temperature and in the presence of zeolite catalysts of the pentasil type containing protons and having an SiO2 /Al2 O | 11/26/1991 |
| 5055617 | Process for the preparation of N-alkylated anilines Anilines or N-alkyl-anilines are advantageously reacted with alkyl alcohols or the associated dialkyl ethers at elevated temperature in the gas phase, if a γ-Al2 O3 is used that is prepared by dehydration of an aluminum oxide/hydrox... | 10/08/1991 |
| 5030759 | Selective N-alkylation of aniline in the presence of zeolite catalysts The selective N-alkylation of anilines comprising providing a mixture of a lower alkanol and an aniline, exposing said mixture to a temperature of from 250° C. to 350° C. in the presence of an acidic zeolite having a pore size of from 6 to 8 angstroms w... | 07/09/1991 |
| 4992587 | Process of using a ruthenium-promoted, halogen-containing, nickel and/or cobalt catalyst, to catalyze an amination reaction Process for preparing a ruthenium promoted, halogen-containing, nickel and/or cobalt catalyst includes impregnating, in one or more steps, a porous metal oxide support with a nickel compound and/or a cobalt compound, and a ruthenium compound to form a cat... | 02/12/1991 |
| 4950690 | Process for the animation of alcohols using activated phosphorus-containing catalysts The present invention is a process for selectively aminating alcohols wherein a mixture of an amine and a primary or secondary alcohol or diol is contacted with a catalytically effective amount of a phosphorus-containing catalyst which has been impregnate... | 08/21/1990 |
| 4921980 | Process for the preparation of N-Alkylanilines A process for the preparation of N-alkylanilines is described, the most essential feature of which comprises reacting corresponding anilines at 150° to 300°C. with corresponding alcohols in the presence of a catalyst consisting of silica gel as carrier,... | 05/01/1990 |
| 4922024 | Amination process employing group vib metal catalysts A process for preparing amines comprising contacting an alcohol with a reactant amine in the presence of hydrogen and a catalyst comprising at least one compound containing an element of Group VIB and at least one non-metallic element of Groups IIIA, IVA,... | 05/01/1990 |
| 4888447 | Process for preparing alkoxylated tertiary amines A process is described for selectively preparing alkoxylated tertiary amine compounds, such as aminated ethoxylated amines, at ambient pressure by reacting an oxyalkylated alcohol with a secondary amine in the presence of a reductive amination catalyst at... | 12/19/1989 |
| 4855505 | Promoted nickel and/or cobalt catalyst, its use, and process performed in its presence The invention relates to a ruthenium promoted nickel and/or cobalt dehydrogenation-hydrogenation catalyst. The ruthenium on the catalyst is applied from a solution containing a ruthenium halide compound. The catalyst use in organic reactions and a process... | 08/08/1989 |
| 4801752 | Preparation of N-alkyl and N,N-dialkylaniline The present invention relates to a vapor phase process for the production of N-alkyl and N,N-dialkylaniline by alkylation of aniline with an alcohol, preferably methanol and ethanol, in the presence of a ZSM-5 catalyst. A modified ZSM-5 catalyst has the a... | 01/31/1989 |
| 4713470 | Racemization of amino acids There is disclosed a process for the racemization of amino acids and derivatives thereof. The racemization process of the present invention uses an aromatic aldehyde-containing polymer made from the reaction of a hydroxy-aromatic aldehyde with a chloromet... | 12/15/1987 |
| 4621158 | Method for making amines A method for making amines by reacting alcohols and/or aldehydes with primary and/or secondary amines or with ammonia in the presence of a catalyst at elevated temperature, and optionally at elevated pressure, in the liquid phase, the catalyst being an un... | 11/04/1986 |
| 4613705 | Catalytic alkylation of aromatic amines with alkanols Aromatic amines are alkylated by reaction with an alcohol in the presence of a Group V-B metal oxide alkylation catalyst, preferably a major proportion of a Group V-B metal oxide such as V2 O5 in combination with a minor proportion o... | 09/23/1986 |
| 4395572 | Process for preparing N-alkyl-nitroanilines This invention relates to a process of preparing N-alkyl-nitroanilines selected from the group consisting of N-alkyl-mononitroanilines and N-alkyl-dinitroanilines by the O-alkylation of a nitrophenol to produce the corresponding alkoxy derivative, followe... | 07/26/1983 |
| 4322530 | Alkylation of polyamines A process for alkylating a polyamine by contacting, in a liquid media, a polyamine, an olefinic compound, carbon monoxide, and a hydrogen source in the presence of a catalytic amount of a rhodium atom containing compound selected from metallic rhodium, rh... | 03/30/1982 |
| 4317932 | Preparation of secondary amines A process for forming amines by contacting, in a liquid media, an olefinic compound, carbon monoxide, water, and ammonia in the presence of a rhodium atom containing compound selected from metallic rhodium, rhodium salts, rhodium oxides, and rhodium carbo... | 03/02/1982 |
| 4289907 | Process for preparing N-alkyl-nitroanilines This invention relates to a process of preparing N-alkyl-nitroanilines selected from the group consisting of N-alkyl-mononitroanilines and N-alkyl-dinitroanilines by the O-alkylation of a nitrophenol to produce the corresponding alkoxy derivative, followe... | 09/15/1981 |
| 4150054 | N-akylation of aromatic amines in the presence of an aliphatic amino compound An improvement in a process for the alkylation of an aromatic amine by contacting an aromatic amine with an alcohol in the presence of phosphoric acid, the improvement residing in including in the phosphoric acid an aliphatic amine containing at least one... | 04/17/1979 |
