Famous Patents
In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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 |
| 7348291 | Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising potassium, cesium, cerium, chromium, cobalt, nickel, iron, bismuth, molybdenum, wherein the relative ratios of these elements is represented by the following general formula AaK... | 03/25/2008 |
| 7232788 | Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount... | 06/19/2007 |
| 7196037 | Catalyst carrier and method of producing same A method of producing a catalyst carrier. The method comprises contacting a silicon-containing ceramic material with a solution of an aluminum containing metal compound, firing the resulting material, immersing the material in hot water and, again firing the materia... | 03/27/2007 |
| 7112233 | Honeycomb filter and ceramic filter assembly A ceramic filter assembly having improved exhaust gas processing efficiency. The ceramic filter assembly (9) is produced by adhering with a ceramic seal layer (15) outer surfaces of a plurality of filters (F1), each of which is formed from a sin... | 09/26/2006 |
| 7071140 | Catalyst for the manufacture of acrylonitrile A catalyst comprising a complex of catalytic oxides comprising rubidium, cerium, chromium, iron, bismuth, molybdenum, and at least one of nickel or nickel and cobalt, optionally magnesium, and optionally one of phosphorus, antimony, tellurium, sodium, lithium, potas... | 07/04/2006 |
| 7022643 | Production process for catalyst There is disclosed a production process for a catalyst which process makes it possible to efficiently carry out the supporting of a catalytic component onto a carrier and to obtain the catalyst excellent in quality and performance. This production process is a produ... | 04/04/2006 |
| 6037479 | Chiral diarsine compounds Novel, chiral diarsine compounds, which are present in the (R)- or (S)- or (rac)-form, of the formula ##STR1## wherein R signifies an optionally substituted aryl from the group of phenyI, naphthyl, furyl and thienyl; C3-8 -cycloalkyl or C | 03/14/2000 |
| 5792719 | Supported catalyst for gas-phase oxidation reactions The invention relates to a supported catalyst for gas-phase reactions having an inert support body and a surface coating comprising a) at least 5% by weight of silicon carbide, b) from 5 to 90% by weight, calculated as oxide, of one or more titanium dioxide or... | 08/11/1998 |
| 5427992 | Process for preparing solutions of oligomeric methylaluminoxanes The invention relates to a process for preparing solutions of oligomeric methylaluminoxanes, which contain trimethylaluminum in the free and/or complexed form, in hydrocarbons by partial hydrolysis of trimethylaluminum with water and to carrying out this ... | 06/27/1995 |
| 5338716 | Non-oxide metal ceramic catalysts comprising metal oxide support and intermediate ceramic passivating layer Supported non-oxide metal carbide-containing catalysts are provided which comprise: (a) an oxide support, such as alumina or cordierite; (b) a passivating layer of a ceramic, such as silicon carbide; and (c) a non-oxide metal ceramic catalytic component, ... | 08/16/1994 |
| 5235071 | Catalyst for producing phthalic anhydride and process by using the same The invention relates to a catalyst for producing phthalic anhydride by gas phase catalytic oxidation of o-xylene and/or naphthalene with molecular oxygen or gas containing molecular oxygen and, to a process for producing phthalic anhydride by using said ... | 08/10/1993 |
| 5196389 | Catalytic system particularly for the postcombustion of exhaust gases and a method of producing such a system The invention relates to a catalytic system and to a method of producing such a system. The catalytic system consists of a support on which the catalytically active product is deposited. The support has mechanical or physical properties which are of inter... | 03/23/1993 |
| 4481304 | Catalyst for producing phthalic anhydride A catalyst comprising a catalytically active material composed of 1 to 20 parts by weight as V2 O5 of vanadium oxide, 99 to 80 parts by weight of anatase-type titanium oxide being porous and having a particle diameter substantially o... | 11/06/1984 |
| 4414133 | Catalytic composition There is disclosed a catalytic composition represented by the formula: in which A is iron and/or chromium, B is cerium and/or magnesium and C is potassium and/or lithium; and a, b, c, d, e, f, g, h, m and n stand for the numbers of atoms for molybdenum, tungst... | 11/08/1983 |
| 4356112 | Catalyst for production of phthalic anhydride A catalyst for the production of phthalic anhydride by the catalytic vapor-phase oxidation of o-xylene or naphthalene with molecular oxygen, said catalyst comprising a catalytically active material composed of 1 to 20 parts by weight of V2 O | 10/26/1982 |
| 4276196 | Attrition resistant catalysts Olefin oxidation catalysts having improved attrition resistance are produced by incorporating a substantially uniform-appearing coating of a partially calcined catalytic material onto an inert porous support containing sorbed aqueous silica sol and then c... | 06/30/1981 |
| 4092354 | Process for production of acrylic acid A process for production of acrylic acid by the gas phase catalytic oxidation of acrolein with molecular oxygen in the presence of a catalyst, characterized in that the catalyst is a metal oxide catalyst containing as the metal elements Mo, V, Cu and X in... | 05/30/1978 |
| 4083805 | Preparation of methacrylic acid from methacrolein Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, bismuth, copper, oxygen, a halogen selected ... | 04/11/1978 |
| 4077912 | Catalysts useful for exothermic reactions Catalysts which are excellent for exothermic reactions have been discovered. These catalysts consist of an essentially inert support having a strongly adherent outer coating of active catalytic material.... | 03/07/1978 |
| 4075124 | Process for the preparation of unsaturated acids from unsaturated aldehydes Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, arsenic, at least one element selected from ... | 02/21/1978 |
| 4075123 | Process for the preparation of unsaturated acids from unsaturated aldehydes Methacrylic acid or acrylic acid are produced by the oxidation of methacrolein or acrolein, respectively, with molecular oxygen in the vapor phase in the presence of a catalytic oxide of molybdenum, phosphorus, arsenic, a rare earth element or mixture the... | 02/21/1978 |
| 4073866 | Process for converting nitrogen dioxide into nitrogen monoxide A process for converting nitrogen dioxide into nitrogen monoxide which comprises bringing a gas containing nitrogen dioxide into contact at a temperature ranging from 50° C. to 400° C. with a carbide of a metal selected from the group consisting of chro... | 02/14/1978 |
| 4036780 | Catalyst for the preparation of maleic anhydride A catalyst for the preparation of maleic anhydride by vapor phase catalytic oxidation of benzene with a molecular oxygen containing gas comprising a porous inert support of an alkali metal content, calculated as oxide, of at most 0.3 % by weight and suppo... | 07/19/1977 |
| 3951861 | Catalysts for the preparation of acrolein A catalytic process for the preparation of acrolein by the vapor phase oxidation of propylene which comprises contacting propylene and oxygen with a catalyst composition comprising a catalyst system of the formula: Moa Bib Fec ... | 04/20/1976 |
