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...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7364650 | Fischer tropsch composition and process The present invention provides an upgraded synthetic gasoline having a true boiling point (TBP) range of between 50° C.-300° C., a sulphur content of less than 1 ppm, a nitrogen content of less than 1 ppm, an aromatics content of between 0.01%-35% by weight, an ol... | 04/29/2008 |
| 7220886 | Olefin metathesis A process for the production of propylene from the metathesis of ethylene and 2-butene is disclosed wherein a mixed C4 stream is first treated to enrich and separate the 2-butene from 1-butene and isobutene by isomerization of 1-butene and concurrent frac... | 05/22/2007 |
| 7214841 | Processing C4 olefin streams for the maximum production of propylene In order to maximize the production of propylene when the external supply of ethylene is limited, the C4 cut from a hydrocarbon cracking process is first subjected to autometathesis prior to any isobutylene removal and without any ethylene addition. This ... | 05/08/2007 |
| 7179364 | Production of stable olefinic Fischer-Tropsch fuels with minimum hydrogen consumption The present invention relates to a stable, low sulfur, olefinic distillate fuel blend component derived from a Fischer-Tropsch process and a process for producing this stable, low sulfur, olefinic distillate fuel blend component. The stable, low sulfur, olefinic dis... | 02/20/2007 |
| 7173125 | Triphosphate oligonucleotide modification reagents and uses thereof Hydrazino, oxyamino and carbonyl-based monomers and methods for incorporation into oligonucleotides during enzymatic synthesis are provided. Modified oligonucleotides are provided that incorporate the monomers provided herein. Immobilized oligonucleotides and oligon... | 02/06/2007 |
| 7102024 | Functional biopolymer modification reagents and uses thereof Hydrazino, oxyamino and carbonyl-based reagents and methods for incorporation into oligonucleotides during their solid phase synthesis are provided. Modified oligonucleotides are provided that incorporate the reagents provided here in. Immobilized oligonucleotides a... | 09/05/2006 |
| 7074976 | Propylene production A method for making propylene from alpha olefins, internal linear olefins and isoolefins wherein the alpha olefins are subjected to a combination of hydrogenation and double bond isomerization to form additional internal linear olefins, the internal linear olefins a... | 07/11/2006 |
| 6727396 | Process for the production of linear alpha olefins and ethylene Ethylene and hexene-1 are produced from butene-1 by metathesis of butene-1 and isomerization of the hexene-3 produced therein to hexene-1. The initial starting material is a mixed butene stream wherein butene-1 is isomerized to butene-2 with isobutylene being separa... | 04/27/2004 |
| 6686510 | Production of high-purity isobutene and propylene from hydrocarbon fractions with four carbon atoms A process for production, from an olefinic C4 fraction, on the one hand, of high-purity isobutene and, on the other hand, of propylene by metathesis is described. The process comprises three successive stages: 1) the selective hydrogenation of butad... | 02/03/2004 |
| 6646172 | Preparation of propene A multistage process for preparing propene, in which the first stage is the reaction of 1-butene, 2-butene and isobutene to give propene, 2-pentene and 2-methyl-2-butene in the presence of a metathesis catalyst comprising at least one compound of a metal ... | 11/11/2003 |
| 6639116 | Simplified methods of making 1,3-cyclohexadiene Novel condensation reactions used to produce 1,3-cyclohexadiene. Such a compound is an important precursor in the manufacture of high performance plastics, as one example, are provided. In the past, the production methods for such 1,3-cyclohexadiene requi... | 10/28/2003 |
| 6583329 | Olefin metathesis in a distillation column reactor The metathesis process is carried out in a reaction distillation column for: (A) for the production of propylene from the metathesis of 2-butene and ethylene; (B) for the production of detergent range olefins from the metathesis of C15 and heavier olefins... | 06/24/2003 |
| 6566568 | Molecular averaging of light and heavy hydrocarbons A process for preparing a paraffinic product stream in the gasoline, middle distillate fuel and lube ranges from a C2-5 -containing feedstock and a C20 + paraffinic feedstock is described. The combined feedstocks are subjected to mol... | 05/20/2003 |
| 6562230 | Synthesis of narrow lube cuts from Fischer-Tropsch products A process for preparing hydrocarbons in the lube base oil range, lube base oils and lube oil compositions from a fraction with an average molecular weight above a target molecular weight and a fraction with an average molecular weight below a target molec... | 05/13/2003 |
| 6538169 | FCC process with improved yield of light olefins An FCC process for obtaining light olefins comprises contacting a hydrocarbon feed stream with blended catalyst comprising regenerated catalyst and coked catalyst. The catalyst has a composition including a first component and a second component. The seco... | 03/25/2003 |
| 6518469 | Process for improved yields of higher molecular weight olefins from lower molecular weight olefins A process for improved yields of heavier olefins from a substantially narrow range of lighter hydrocarbon feed stock containing olefins in a reaction distillation column comprising feeding a narrow range of hydrocarbon feed stock containing olefin into a ... | 02/11/2003 |
| 6515193 | Process for production of higher linear internal olefins from butene A process for production of higher linear internal olefins from 1- and 2-butene feedstocks in one or a series of sequential catalytic reactive distillation columns containing olefin disproportionation and olefin isomerization catalysts.... | 02/04/2003 |
| 6433240 | Preparation of propene and, if desired, 1-butene Propene and, if desired, 1-butene are prepared by first reacting 1-butene and 2-butene to give propene and 2-pentene in the presence of a metathesis catalyst containing at least one compound of a metal of transition group VIb, VIIb or VIII of the Periodic... | 08/13/2002 |
| 6429348 | Method for selectively producing propylene by catalytically cracking an olefinic hydrocarbon feedstock The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising a catalyst selected from the group consisting of SA... | 08/06/2002 |
| 6369286 | Conversion of syngas from Fischer-Tropsch products via olefin metathesis A process for preparing distillate fuel compositions from a C2-6 olefinic fraction and a C20 + fraction via molecular averaging is described. The fractions can be obtained, for example, from Fischer-Tropsch reactions, and/or obtained... | 04/09/2002 |
| 6313365 | Ruthenium metathesis catalyst and method for producing olefin reaction product by metathesis reaction using the same The invention has an object of safely and simply preparing a large amount of a ruthenium metathesis catalyst, which is used as a catalyst for a carbon-carbon bond formation using, particularly, a metathesis reaction. The metathesis catalyst has the follow... | 11/06/2001 |
| 6281402 | Alternated process for olefin metathesis The present invention relates to a process for continuous metathesis or disproportionation of olefins, comprising at least 2 phases, a reaction phase a) carried out in a zone comprising at least one reactor containing at least one fixed bed of catalyst an... | 08/28/2001 |
| 6271430 | Preparation of propene The present invention relates to a process for preparing propene by metathesis of olefins. The process comprises preparing propene by a) in a first reactor (R1), reacting 1-butene and 2-butene to give propene and 2-pentene in the presence of a metathesis catal... | 08/07/2001 |
| 6235958 | Process for converting C5 olefinic cuts by metathesis using a catalyst based on rhenium and cesium The present invention provides a process for converting olefinic C5 cuts by metathesis using an improved catalyst containing rhenium, cesium, and delta alumina. The preferred catalysts contains at least one rhenium compound deposited on a suppo... | 05/22/2001 |
| 6175047 | Ruthenium metathesis catalyst and method for producing olefin reaction product by metathesis reaction using the same The invention has an object of safely and simply preparing a large amount of a ruthenium metathesis catalyst, which is used as a catalyst for a carbon-carbon bond formation using, particularly, a metathesis reaction. The metathesis catalyst has the follow... | 01/16/2001 |
| 6166279 | Preparation of olefins The preparation of olefins from steam cracker or refinery C4 streams is carried out by selective hydrogenation of butadienes and acetylenic impurities in the steam cracker or refinery C4 stream, with simultaneous or subsequent, at le... | 12/26/2000 |
| 6075173 | Process for production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms The present invention concerns a process for the production of isobutene and propylene by metathesis of an olefinic C4 cut. The process comprises three successive steps: 1) selective hydrogenation of butadiene with isomerisation of butene-1 to ... | 06/13/2000 |
| 5990369 | Process for producing light olefins The present invention relates to a process for the production of light olefins comprising olefins having from 2 to 4 carbon atoms per molecule from an oxygenate feedstock. The process comprises passing the oxygenate feedstock to an oxygenate conversion zo... | 11/23/1999 |
| 5877365 | Process and plant for the conversion of olefinic C4 cuts to polyisobutene and to propylene The present invention concerns a process for the conversion of an olefinic C4 cut to polyisobutene and to propylene by metathesis. The process comprises three successive steps: (1) selective hydrogenation of diolefins with simultaneous isomeris... | 03/02/1999 |
| 5698760 | Olefin metathesis The present invention is a process for the production of a mixed C4 olefinic stream comprising primarily isobutene and butene-1, and propylene, said process comprising subjecting a mixed olefin feedstock comprising C5 olefins and ethylene to metathesis in... | 12/16/1997 |
| 5672802 | Process for the preparation of alpha olefins This invention relates a process for the preparation of an alpha olefin product having a narrow molecular weight range which comprises metathesizing an internal olefin under non-equilibrium conditions and thereby producing a lower boiling internal olefin ... | 09/30/1997 |
| 5620935 | Method for the regeneration of a catalyst Zeolites containing titanium atoms used as catalyst for the preparation of epoxides from olefins and hydrogen peroxide are regenerated by treating the spent catalyst with hydrogen peroxide in the absence of olefins and the regenerated catalyst is again us... | 04/15/1997 |
| 5177291 | Metathesis process for olefines and a catalyst to be applied therein A metathesis process of the conversion of olefines, in which at least one olefine is brought into contact with a solid catalyst system comprising on a solid silica carrier 0.1-40% by weight of a tungsten compound under reaction conditions such that the ca... | 01/05/1993 |
| 5146033 | Homogeneous rhenium catalysts for metathesis of olefins The invention pertains to rhenium (VII) compounds which are catalysts for metathesis of ordinary olefins (hydrocarbons) and functionalized olefins in a homogeneous phase and to methods of synthesizing these compounds. The rhenium compounds comprise a rhen... | 09/08/1992 |
| 5059733 | Process for making 1-hexene and high octane blending components Disclosed is a process for preparing n-hexenes and high octane blending components from a mixture of C6 olefin isomers. Also disclosed is a process for preparing 1-hexene from a mixture of C6 olefin isomers which provides high octane... | 10/22/1991 |
| 5059734 | Process for selectively producing C5 to C18 straight chain olefins Disclosed is a process for preparing C5 to C18 straight chain -olefins from the corresponding internal olefins. The process comprises reacting a C5 to C18 straight chain olefin reactant with an electrophi... | 10/22/1991 |
| 5057637 | Process for producing C5 to C18 straight chain -olefins from the corresponding internal olefins Disclosed is a process for preparing C5 to C18 straight chain -olefins from the corresponding internal olefins. The process comprises reacting a C5 C18 straight chain olefin reactant with an electrophilic... | 10/15/1991 |
| 5057638 | Process for making 1-hexene from 1-butene Disclosed is a process for preparing 1-hexene from 1-butene. The 1-butene is metathesized to produce 3-hexene which is then subjected to, e.g., an hydration/dehydration procedure to produce a mixture of n-hexenes containing 1-hexene.... | 10/15/1991 |
| 5057636 | Process for recovering N-hexenes from a mixture of C6 olefin isomers by oligomerizing the branched-chain C6 olefin isomers in the mixture using a moderate strength acid catlyst Processes are disclosed for recovering n-hexenes from a mixture comprising n-hexenes and at least one branched-chain C6 olefin isomer by oligomerizing the branched-chain C6 olefin isomers, but not the n-hexenes, and recovering the n-... | 10/15/1991 |
| 5026935 | Enhanced production of ethylene from higher hydrocarbons The present invention provides a process for the preparation of ethylene from C4 or higher feed by a combination of cracking and metathesis wherein higher hydrocarbon is cracked to form ethylene and propylene and at least a portion of the propy... | 06/25/1991 |
