Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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 |
| 7943710 | Multi-metal oxide catalyst and method for producing (meth)acrylic acid by using the same The present invention provides a Mo—Bi—Nb based composite metal oxide (with the proviso that Te is not included); a method for producing (meth)acrylic acid from at least one reactant selected from the group consisting of propylene, propane, isobutylene, t-butyl ... | 05/17/2011 |
| 7300903 | Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and α-olefin/conjugated diene copolymers The invention provides a process using olefin polymerization catalysts exhibiting excellent polymerization activities. The olefin polymerization catalysts of the invention contain a transition metal compound typified by formula (I) and at least one of an organometal... | 11/27/2007 |
| 7214642 | Methods of preparing active chromium/alumina catalysts via treatment with sulfate Methods of preparing a polymerization catalyst are provided that include contacting a support comprising alumina with a sulfating agent and with chromium. In an embodiment in which the chromium is provided from a chromium compound such as chromium oxide, the support... | 05/08/2007 |
| 6916891 | Attrition resistant inorganic microspheroidal particles Microspheroidal particles, suitable as fluidized bed catalyst supports, are prepared by incorporating a portion of small, preferably recycled, particles into a slurry of inorganic oxide sol and inorganic particles which is spray dried to form microspheroidal particl... | 07/12/2005 |
| 6441110 | Method for producing halogen-free reactive polyisobutene A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 50 mol % and an average molecular weight Mn of 280-10000 dalton by the cationic polymerization in the liquid phase of isobutene or h... | 08/27/2002 |
| 6414097 | Methods for cross-methathesis of terminal olefins A method for the cross-metathesis of terminal olefins is disclosed. The method describes making disubstituted internal olefin products by contacting a first terminal olefin with another first terminal olefin to form a dimer and then contacting the dimer w... | 07/02/2002 |
| 6384154 | Preparation of halogen-free, reactive polyisobutene A process for preparing halogen-free, reactive polyisobutene having a terminal double bond content of more than 60 mol % and an average molecular weight Mn of 800-3000 dalton by cationic polymerization in the liquid phase of isobutene over an a... | 05/07/2002 |
| 6281302 | Solid catalyst component, catalyst for olefin polymerization, and method for producing olefin polymer A solid catalyst component for olefin polymerization prepared by a method which comprises contacting the following components (a), (b), (c) and (d): (a) a polymer carrier containing a carbonyl group; (b) an organometallic compound of metal of Group I, II or XIII of... | 08/28/2001 |
| 6015866 | Production of polyethylene having a bimodal molecular weight distribution A process for producing high density polyethylene, the process comprising polymerising ethylene, or copolymerising ethylene and an alpha-olefinic comonomer comprising from 3 to 10 carbon atoms, in the presence of a catalyst system comprising first and sec... | 01/18/2000 |
| 5965675 | Polymerization processes A polymerization process is provided comprising contacting under polymerization conditions a catalyst, a taming agent, ethylene and optionally a comonomer, wherein the catalyst comprises chromium oxide, titanium oxide and an inorganic refractory oxide, wh... | 10/12/1999 |
| 5391657 | Method for reducing sheeting and static charges during polymerization of ethylene polymers A method for reducing sheeting during polymerization of an alpha-olefin by feeding either a positive charge generating (MgO, ZnO, Al2 O3, CuO, and mixtures thereof) or a negative charge generating (V2 O5, SiO | 02/21/1995 |
| 5284811 | Polymerization catalysts and processes An improved supported chromium oxide catalyst, a process for preparing the catalyst and a process for polymerizing olefin monomers utilizing the catalyst are provided. In accordance with the preparation process, chromium oxide and a support containing one... | 02/08/1994 |
| 5164353 | Supported chromium oxide catalyst A supported catalyst for ethene polymerization by Phillips catalysis is disclosed. The supported catalyst is prepared by (1) mixing a porous silicate in an inert, organic liquid to produce a silicate suspension, (2) providing an ester of phosphoric acid o... | 11/17/1992 |
| 5114990 | Process for the production of pigment/plastic premixes There is described a process for the production of pigment/plastic premixes characterized by homogeneous distribution of pigment in a polymer matrix. The invention is based on the polymerization of olefins carried out by means of a process using Ziegler c... | 05/19/1992 |
| 5034364 | Multiple chromium compound-containing catalyst composition and olefin polymerization therewith An olefin, particularly alpha-olefin, polymerization catalyst composition, supported on a refractory oxide support comprises two chromium specie: (1) CrO3 or any chromium compound calcinable to CrO3 ; and (2) at least one silylchroma... | 07/23/1991 |
| 5010151 | Method for preparing ethylene polymers A method of preparing ethylene polymers which comprises polymerizing ethylene, or ethylene and one or more -olefins other than ethylene in the presence of a composite catalyst which catalyst comprises: (A) a solid composition prepared by depositing one ... | 04/23/1991 |
| 4451573 | Catalyst for polymerization of olefins A catalyst suitable for use in the polymerization of olefins is disclosed. This catalyst contains: [A] a solid catalyst component obtained by calcining a reaction product of (a) at least one compound selected from an amine compound, a phosphoric acid amid... | 05/29/1984 |
| 4435551 | Process for the polymerization or copolymerization of ethylene with an improved supported chromium oxide type catalyst An improved process for the preparation of a catalyst for the polymerization of ethylene, and an improved process for preparing an ethylene polymer therewith. An improved supported chromium-containing catalyst is prepared by reacting (1) a chromium chelat... | 03/06/1984 |
| 4384987 | Supported chromium oxide polymerization catalyst A polymerization catalyst is prepared by a process which includes the step of treating silica-supported chromium oxide with a permanganate compound such as potassium permanganate. The catalyst is then activated such as by sequential heating in a reducing ... | 05/24/1983 |
| 4380616 | Polymerization of olefins in the presence of chromium-containing catalysts Olefins are polymerized in the presence of chromium-containing catalysts which have been improved by depositing the chromium onto the inorganic oxide support in the vapor phase rather than as an inorganic or organic compound. The resulting polymers exhibi... | 04/19/1983 |
| 4276399 | Supported catalyst from chromium for olefin polymerization Polymerization of 1-olefins is conducted with a supported catalyst consisting essentially of a polymeric hydrocarbon aluminate comprising at least one ##STR1## unit.... | 06/30/1981 |
| 4239872 | Olefine polymerization with supported catalysts Polymerization catalysts are prepared by impregnation of a silica or aluminum support with a vanadium, titanium and/or chromium salt decomposable upon calcination to the oxide, calcining the impregnated support at about 500°-700° C., impregnating the ca... | 12/16/1980 |
| 4189402 | Supported catalyst for olefin polymerization Polymerization of 1-olefins is conducted with a supported catalyst consisting essentially of a polymeric hydrocarbon aluminate comprising at least one ##STR1## unit.... | 02/19/1980 |
| 4090013 | Absorbent composition of matter A dry, solid, water-swellable, water-insoluble absorbent composition of matter comprises an ionic complex of a water-soluble anionic poly-electrolyte and a polyvalent metal cation. The composition is characterized by an ability to uncomplex at an elevated... | 05/16/1978 |
| 4072529 | Gelled photopolymer composition and methods of making them A negative-working, reversibly gelled composition is disclosed, suitable for use as the photocurable component in a blank for preparation of an article in relief, such as a printing plate. Uncured portions of the composition are removed with an aqueous so... | 02/07/1978 |
