Bizarre Patents
Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
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 |
| 7253305 | Tertiary alkyl acetate preparation Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed... | 08/07/2007 |
| 7238260 | Purification of N-(2-hydroxyethyl)-2-pyrrolidone N-(2-hydroxyethyl)-2-pyrrolidone (HEP) is purified by a distillation sequence in which the purified HEP is recovered as a side stream without being separated as an overhead at any point in the procedure. ... | 07/03/2007 |
| 7232783 | Propylene oxide catalyst and use A process is provided for the production of a noble metal on TS-1 catalyst useful for the production of propylene oxide wherein TS-1 from hydrothermal crystallization has noble metal dispersed thereon, the resulting material is spray dried and template used in the c... | 06/19/2007 |
| 7182932 | Catalyst preparation A TS-1 catalyst suitable for the production of oxirane compounds is prepared by subjecting conventionally formed TS-1 to a size reduction treatment such as milling such that the average particle size weighted by volume of the TS-1 is reduced to less than 10 microns ... | 02/27/2007 |
| 7105687 | Propylene oxide purification and recovery In accordance with the invention, propylene oxide is formed by reaction of propylene and hydrogen peroxide or by reaction of propylene, oxygen and hydrogen in methanol solvent, methanol and methyl formate are separated from propylene oxide by extractive distillation... | 09/12/2006 |
| 7084284 | Separation process Phosphine and/or phosphine oxide promoters are effectively separated from propylene oxide reaction solvents through use of a membrane effective to retain the phosphine and/or phosphine oxide. ... | 08/01/2006 |
| 7078539 | Carbonate decolorization The color of organic carbonate such as ethylene carbonate or propylene carbonate is substantially improved by ultraviolet irradiation. ... | 07/18/2006 |
| 7022885 | Purification on methyl tertiary butyl ether The present invention relates to purification of an MTBE process stream by contact in the liquid phase with a large pore zeolite such as 13X or Zeolite Y. ... | 04/04/2006 |
| 7002026 | Removal of propylene glycol and/or propylene glycol ethers from aqueous streams An aqueous stream containing propylene glycol and/or ethers thereof is treated by counter current liquid—liquid extraction with propylene and/or propane to separate the propylene glycol and/or ether from the aqueous stream. ... | 02/21/2006 |
| 6969780 | Production of butanediol The catalytic hydrogenation of HBA and/or HMPA is improved by either or both of (1) increasing the temperature in the hydrogenation zone from about 50 to 70° C. at the inlet to above 80° C. at the outlet and (2) raising the pH of the hydrogenation feed to 4.5–6.... | 11/29/2005 |
| 6936740 | Dense phase oxidation of benzene Phenol is formed by reaction of oxidant and benzene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture. ... | 08/30/2005 |
| 6914167 | Vent recovery system A process for absorbing propylene from a gaseous propylene oxide process purge stream wherein propane liquid is used to absorb the propylene. ... | 07/05/2005 |
| 6906200 | Production of N-vinyl pyrrolidone N-vinyl pyrrolidone is produced by dehydration of N-hydroxyethyl pyrrolidone in the presence of an amorphous mixed oxide catalyst such as an amorphous Ca/Zn oxide catalyst. ... | 06/14/2005 |
| 6884898 | Propylene oxide process Propylene oxide is formed by reaction of propylene with molecular oxygen in a high boiling solvent containing slurried solid catalyst, the light components are flashed and the remaining liquid containing slurried catalyst is recycled. ... | 04/26/2005 |
| 6870060 | Product recovery from supercritical mixtures Oxidation products are recovered from a mixture of the products in a dense phase or supercritical solvent by a liquid—liquid extraction at dense phase conditions. ... | 03/22/2005 |
| 6867312 | Propylene oxide process Propylene oxide is formed in a two step reaction wherein in a first step oxygen and hydrogen are reacted in the absence of propylene to form hydrogen peroxide and in a second step propylene is reacted with the formed hydrogen peroxide to form propylene oxide, the sa... | 03/15/2005 |
| 6858561 | Phosphorus/vanadium catalyst preparation A process for preparing a catalyst for maleic anhydride production wherein a +5 vanadium compound such as V2O5, an anhydrous phosphoric acid, and optionally promoters are admixed in an organic alcohol solvent, the admixture is rapidly brought t... | 02/22/2005 |
| 6858560 | Ethylene oxide catalyst An ethylene oxide catalyst is provided which is essentially transition metal and rhenium free and which consists essentially of silver, alkali metal, sulfur and boron components on a support such as alumina, optionally with a fluorine or chlorine component. ... | 02/22/2005 |
| 6846774 | Ethylene oxide catalyst The invention relates to an ethylene oxide catalyst comprised of silver deposited on an alumina carrier which has been treated to with an aqueous basic salt solution, the pH of the aqueous treating solution is maintained above 8 during the treatment. ... | 01/25/2005 |
| 6762311 | Ethylene oxide catalyst A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of critical amounts of an alkali metal component and a sulfur component, the catalyst being essentially free of rhenium and transition metal component... | 07/13/2004 |
| 6755979 | Peroxide impurities removal A propylene oxide/styrene monomer aqueous purge stream is contacted with a catalyst at conditions effective to decompose peroxides contained therein, and oxygen formed by the decomposition swept from the decomposition with a nitrogen vapor stream from ethylbenzene o... | 06/29/2004 |
| 6750173 | Ethylene oxide catalyst The invention relates to an ethylene oxide catalyst comprised of silver deposited on an alumina carrier which has been treated to remove at least 25% of the surface sodium ions and replace the removed sodium ions with up to 10 ppm of lithium ions and to the preparat... | 06/15/2004 |
| 6710194 | Epoxidation process Propylene oxide is produced by liquid phase reaction of propylene oxygen and hydrogen in contact with a solid epoxidation catalyst at elevated temperature and pressure, the reaction conditions being regulated to provide a weight ratio of dissolved oxygen to dissolve... | 03/23/2004 |
| 6710192 | Dense phase epoxidation Propylene oxide is formed by reaction of hydrogen, oxygen, and propylene over a solid catalyst such as Pd on TS-1, the reaction being carried out in carbon dioxide solvent at conditions effective to provide a dense phase reaction mixture. ... | 03/23/2004 |
| 6696579 | Alkylene carbonate purification An alkylene carbonate such as propylene carbonate is contacted with an alumina or silica solid adsorbent having a surface area of 50-400 m2 /g such as basic alumina to remove impurities therefrom and improve color and color stability.... | 02/24/2004 |
| 6583300 | Epoxidation system with fixed bed reactors A process for the production of an oxirane compound by reaction of an olefin with a hydroperoxide reactant in the presence of a solid epoxidation catalyst, wherein the olefin and hydroperoxide reactants are first reacted in it least two fixed bed reactors... | 06/24/2003 |
| 6562987 | Method for highly exothermic epoxidation reactions A process is provided for the production of oxirane compounds by reaction of an olefin such as propylene with an organic hydroperoxide using a solid contact catalyst, characterized in that a series of separate reaction zones are used, each packed with epo... | 05/13/2003 |
| 6563010 | Adsorbent bed loading and regeneration The process for removing impurities from a liquid by contact with a solid adsorbent using parallel contact adsorbent beds such that when one bed is contacting the liquid the parallel bed is being regenerated by contact with heated inert gas, wherein durin... | 05/13/2003 |
| 6555493 | Solid epoxidation catalyst and preparation The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction of olefin, oxygen and hydrogen.... | 04/29/2003 |
| 6533843 | Two stage flash for hydrocarbon removal Scrubber liquid from an ethylene oxide process rich in bicarbonate and dissolved ethylene is flashed in two stages to separate ethylene containing vapor from bicarbonate rich solution reduced in ethylene content.... | 03/18/2003 |
| 6527887 | Polymeric cyclodextrin nitrate esters Cyclodextrin polymers are nitrated to provide novel nitrate esters of cyclodextrin polymers which are useful for encapsulating explosives to provides energetic compositions of reduced sensitivity; a new method for the preparation of cyclodextrin polymers ... | 03/04/2003 |
| 6512129 | Epoxidation process Insoluble resinous sodium materials are separated from a hydroperoxide/olefin epoxidation feed by contact with a fine screen or a bed of coalescing solids.... | 01/28/2003 |
| 6500311 | Propylene oxide purification A mixture of propylene oxide and methanol is separated by liquid/liquid extraction using water and a hydrocarbon such as n-octane as extractive solvents.... | 12/31/2002 |
| 6478930 | Impurities separation by distillation A distillation procedure is provided for the separation of impurities from organic materials such as glycols and glycol ethers whereby a liquid stripping component is interfaced into a distillation column with or below the organic material introduction, h... | 11/12/2002 |
| 6452027 | Heat recovery procedure The present invention provides a process treating the cycle gas from an ethylene oxide reactor to avoid heat losses in a carbonate scrubbing system as well as glycol formation in the carbonate scrubbing and catalyst contamination upon cycle gas recycle.... | 09/17/2002 |
| 6428209 | Sack from a flexible material and method for its formation The invention relates to a sack from a flexible material, such as paper and/or plastic material, which sack is provided with a longitudinal closing seam and/or a transverse closing seam, which connects to each other layers of material that lie on each oth... | 08/06/2002 |
| 6417412 | Purification of tertiary butyl alcohol The present invention relates to purification of a tertiary butyl alcohol process stream by contact in the liquid phase with a large pore zeolite such as 13X in the sodium form.... | 07/09/2002 |
| 6375804 | Tertiary butyl acetate recovery The present invention provides a distillation separation method whereby tertiary butyl acetate is separated by distillation as an overhead stream from a bottoms acetic acid stream with the proviso that water is incorporated in the system such that the bot... | 04/23/2002 |
| 6376720 | Cobalt-catalyzed process for preparing 1,3-propanediol Ethylene oxide is hydroformylated to 3-hydroxypropanal using a non-phosphine-ligated cobalt catalyst and diamine promoter.... | 04/23/2002 |
| 6376724 | Cobalt-catalyzed process for preparing 1,3-propanediol Ethylene oxide is hydroformylated to 3-hydroxypropanal using a non-phosphine-ligated cobalt catalyst and a primary or secondary amine promoter.... | 04/23/2002 |
