Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7122501 | Catalyst and process for the direct synthesis of hydrogen peroxide A description follows of a bimetallic catalyst, obtained by dispersing in sequence and alternating the precursors of the single metal components of the catalyst on a carrier, and a process for the synthesis of hydrogen peroxide by the direct reaction of hydrogen wit... | 10/17/2006 |
| 7002010 | Process for the preparation of morpholinones as light stabilizers The instant invention discloses a process for the preparation of compounds of the formula I: wherein the general symbols are as defined in claim 1, which process comprises reacting a compound of formula II: | 02/21/2006 |
| 6790806 | Core/jacket catalyst molding The core/jacket catalyst molding with a core made from an inorganic support material and with a jacket made from a catalytically active material can be prepared by coextruding an aqueous molding composition which comprises the support material or a precursor ... | 09/14/2004 |
| 6521564 | Modification of a hydrogenation catalyst A process for the modification of a hydrogenation catalyst of the Raney nickel, Raney cobalt, nickel-on-carrier or cobalt-on-carrier type, which process includes treating the hydrogenation catalyst at temperatures of about 0° C. to about 120° C. with ca... | 02/18/2003 |
| 6455465 | Photocatalyst coated products and a method for producing a photocatalyst layer A photocatalyst coated product having excellent photocatalytic functions including a decomposing function and a hydrophilic function achieved by forming on the surface of a product to be treated a titania layer as a photocatalyst having high hardness and ... | 09/24/2002 |
| 6387248 | Method of preparing a catalyst for use in the hydrotreating of high boiling hydrocarbon feedstocks A catalyst characterized by its ability to hydrotreat a charge hydrocarbon feed containing components boiling above 1000° F., and sediment-formers, sulfur, metals, asphaltenes, carbon residue, and nitrogen is prepared by mulling a porous alumina support ... | 05/14/2002 |
| 6325919 | Catalyst support, catalyst, reactor for hydrogenation reaction, and catalytic reaction method A catalyst carrier composed of a refractory inorganic oxide has a rotationally symmetrical shape having a hollow portion, such as a doughnut shape. An outer peripheral surface and the inner peripheral surface separating the hollow portion are linked by cu... | 12/04/2001 |
| 6169214 | Catalyst consisting of a hollow cylindrical carrier having a catalytically active oxide material applied to the outer surface of the carrier, and process for using said catalyst A coated catalyst which consists of a hollow cylindrical carrier and a catalytically active oxide material applied to the outer surface of the carrier, the applied catalytically active oxide material being applied in a coat thickness of from 10 to 1000 μ... | 01/02/2001 |
| 6124229 | Process for the preparation of metallocene catalyst systems on inert support material using gas phase reactor Disclosed is a process for preparing a supported metallocene catalyst by introducing, in a first stage, a gas stream comprising an organoaluminum compound, an inert support material and water, into a first gas phase reactor; allowing the mixture to react ... | 09/26/2000 |
| 6046343 | Prevention of catalyst attrition and tar formation in manufacture of maleic anhydride Improved methods and apparatus for manufacture of maleic anhydride by catalytic oxidation of n-butane or other hydrocarbon having four carbon atoms in a straight chain over a fixed catalyst bed comprising a phosphorus vanadium oxide catalyst. Movement of ... | 04/04/2000 |
| 5922818 | Process for a gas phase olefin polymerization The present invention relates to a process for introducing a solid catalyst into a gas-phase olefin polymerization reactor. It comprises in particular storing the catalyst in the form of a dry powder in a hopper, withdrawing from the hopper a measured amo... | 07/13/1999 |
| 5910608 | Catalyst consisting of a hollow cylindrical carrier having a catalytically active oxide material applied to the outer surface of the carrier, and process for using said catalyst A coated catalyst which consists of a hollow cylindrical carrier and a catalytically active oxide material applied to the outer surface of the carrier, the applied catalytically active oxide material being applied in a coat thickness of from 10 to 1000 μ... | 06/08/1999 |
| 5879715 | Process and system for production of inorganic nanoparticles A process and system for the production of inorganic nanoparticles by precipitating the inorganic nanoparticles by a precipitating agent from a microemulsion with a continuous and a non-continuous phase; and concentrating the precipitated nanoparticles em... | 03/09/1999 |
| 5872074 | Leached nanocrystalline materials process for manufacture of the same, and use thereof in the energetic field Leached nanocrystalline materials having a high specific surface are particularly useful for storing hydrogen or as catalysts or electrocatalysts in the manufacture electrodes, especially for fuel cells. Such materials can be manufactured by preparing a n... | 02/16/1999 |
| 5840260 | Catalyst removal system Dangers of catalyst removal are decreased while the efficiency of the process is increased by provision of a new nozzle. The nozzle is two concentric pipes connected at one end, with the inner pipe extending slightly beyond the outer pipe at the other end... | 11/24/1998 |
| 5789332 | Fluidized bed gas phase process of preparing a supported metallocene catalyst The present invention is directed to a gas phase process of preparing a supported metallocene catalyst wherein an alkylaluminum compound, water, a metallocene and, optionally, an olefin are metered into a fluidized bed reactor containing a fluidized bed o... | 08/04/1998 |
| 5690836 | Method of removing catalyst A method of removing a catalyst, particularly Raney nickel, from a catalytic reaction product, particularly a hydrogenation reaction product, by passing the catalytic reaction product containing the solid catalyst through a hollow tubular filter medium wh... | 11/25/1997 |
| 5677261 | Preparation of a catalyst consisting of a carrier and a catalytically active oxide material applied to the surface of the carrier A catalyst which consists of a carrier and a catalytically active oxide material applied to the surface of the carrier is prepared by a process in which the carrier is first moistened with, as an adhesive liquid, an aqueous solution of an organic substanc... | 10/14/1997 |
| 5607893 | Method for uniform loading of catalyst tubes A method for the uniform loading of catalyst tubes with catalyst particles, which tubes are mounted at tube inlet side in a tube sheet, the method comprises introducing a feedstream of catalyst particles on the tubesheet in a number of substreams with a s... | 03/04/1997 |
| 5466646 | Process for the preparation of solid state materials and said materials A process for the preparation of solid state materials such as catalysts, electrolytes, piezo electric materials and superconductors is disclosed. The process produces materials with high phase purity. Novel solid state materials having high phase purity ... | 11/14/1995 |
| 5378672 | Methods and systems for multi-component catalyst formulation A system for combining the components of a multi-component catalyst system comprising at least four chambers with flow passageway means connecting the chambers in series. The catalyst components can include a transition metal, an electron donor and a co-c... | 01/03/1995 |
| 5012027 | Dual profile surface-impregnated dehydrogenation catalyst and process A novel catalytic composite and a process for its use is disclosed. The catalyst composite comprises a first component selected from Group IA and Group IIA elements of the Periodic Table of the Elements, a second component selected from iridium, and osmiu... | 04/30/1991 |
| 4880764 | Dehydrogenation catalyst and process A novel catalytic composite and a process of its use is disclosed. The catalyst comprises a platinum group metal component, a first modifier component selected from Group IA and IIA elements of the Periodic Table, a second modifier components selected fro... | 11/14/1989 |
| 4804796 | Catalytic, hollow, refractory spheres, conversions with them Improved, heterogeneous, refractory catalysts are in the form of gas-impervious, hollow, thin-walled spheres (10) suitable formed of a shell (12) of refractory such as alumina having a cavity (14) containing a gas at a pressure greater than atmospheric pr... | 02/14/1989 |
| 4786625 | Dehydrogenation catalyst compositon A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an optional alkali or alkaline earth me... | 11/22/1988 |
| 4716143 | Dehydrogenation catalyst composition A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an alkali or alkaline earth metal compo... | 12/29/1987 |
| 4714692 | Microemulsion impregnated catalyst composite and use thereof in a synthesis gas conversion process A catalyst composition for synthesis gas conversion comprising a ruthenium metal component deposited on a support carrier wherein the average metal particle size is less than about 100 A. The method of manufacture of the composition via a reverse micelle ... | 12/22/1987 |
| 4650778 | Metal halide vaporization into diluents Metal halide particles useful, among other things, as olefin polymerization catalyst precursors and catalyst supports are prepared by vaporizing the metal halide and then condensing it in the presence of a diluent.... | 03/17/1987 |
| 4483940 | Method for manufacture of honeycomb catalyst A method for the manufacture of a honeycomb carrier of enhanced resistance to thermal shocks, which method comprises applying a coat of water-soluble high-molecular organic compound to the surface of a ceramic honeycomb carrier of monolithic construction ... | 11/20/1984 |
| 4452911 | Frangible catalyst pretreatment method for use in hydrocarbon hydrodemetallization process Activated bauxite particulate material having usual nominal particle size range of 20-50 mesh (U.S. Sieve Series) is treated by fluidization in an upflowing gas so as to attrite the particles and stabilize the particle shape and size, thereby making the c... | 06/05/1984 |
| 4391880 | Recovery of heat and vaporized material from a reaction effluent Process and system for cooling a reaction effluent containing volatized catalyst wherein the effluent is contacted with circulating cooled solid catalyst in dilute phase transport contact, with the volatized catalyst being condensed onto the solid catalys... | 07/05/1983 |
| 4323482 | Catalyst and method of preparation A catalyst for the manufacture of organic compounds comprising an intimate mixture of a reducible metal oxide and at least one refractory oxide, treated by heating to a temperature in the range of 550° C. to 1000° C. in the presence of a preselected red... | 04/06/1982 |
| 4188309 | Shaped catalyst and process for its production There are provided shaped catalysts, particularly for the formation and/or equipping of reaction chambers with catalytically active surfaces, consisting of a structural reinforcing agent of ferrous metal, a layer of a heat resistant carrier material on th... | 02/12/1980 |
| 4124528 | Process for regenerating adsorbents with supercritical fluids An adsorbate is removed from an adsorbent by contacting the adsorbent with a supercritical fluid which is a solvent for the adsorbate. The supercritical fluid containing the dissolved adsorbate is then subjected to a physical treatment which renders the s... | 11/07/1978 |
| 4090979 | Process for producing chemical pump absorbents for a cartridge combustion-driven chemical laser A process for producing improved chemical laser absorbent materials by prpitating the chemical laser absorbent materials of metal from liquid anhydrous ammonia at very low temperature to produce an absorbent material that has a high surface area and when... | 05/23/1978 |
| 3931045 | Catalyst activation Solid comminuted catalytic materials are activated by passing an activating stream through a shallow deposit of such materials on a porous substrate, characterized in that the catalyst particles are in a quiescent state during contact with the activating ... | 01/06/1976 |