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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8183424 | Transalkylation of heavy aromatic hydrocarbon feedstocks In a process for producing xylene by transalkylation of a C9+ aromatic hydrocarbon feedstock with a C6 and/or C7 aromatic hydrocarbon, the C9+ aromatic hydrocarbon feedstock, at least one C6 and/or C7 | 05/22/2012 |
| 8119848 | Preparation of alkylation feed A process for treating an alkylation feedstock comprising olefins, n-alkanes, iso-alkanes, and impurities including one or more of butadiene, oxygenates, nitrogen-containing compounds, and sulfur-containing compounds, the process including: contacting an alkylation ... | 02/21/2012 |
| 7951984 | Aromatics co-production in a methanol-to-propylene unit The present invention provides a reactor system having: (1) a first reactor receiving an oxygenate component and a hydrocarbon component and capable of converting the oxygenate component into a light olefin and the hydrocarbon component into alkyl aromatic compounds... | 05/31/2011 |
| 7868215 | Process for producing cumene A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalys... | 01/11/2011 |
| 7863492 | Production of linear alkyl benzene This invention relates to a process for producing linear alkyl benzene and linear paraffins, the process including the steps of obtaining a hydrocarbon condensate containing olefins, paraffins and oxygenates from a low temperature Fischer-Tropsch reaction; a) fracti... | 01/04/2011 |
| 7847138 | Process for making styrene using mircochannel process technology The disclosed invention relates to a process for converting ethylbenzene to styrene, comprising: flowing a feed composition comprising ethylbenzene in at least one process microchannel in contact with at least one catalyst to dehydrogenate the ethylbenzene and form ... | 12/07/2010 |
| 7834227 | Aromatics co-production in a methanol-to-propylene unit The present invention provides a reactor system having: (1) a first reactor receiving an oxygenate component and a hydrocarbon component and capable of converting the oxygenate component into a light olefin and the hydrocarbon component into alkyl aromatic compounds... | 11/16/2010 |
| 7799961 | Process of using a high activity catalyst for the transalkylation of aromatics A process for producing an alkylated aromatic compound from polyalkylated aromatic compound(s) having bi-alkylated aromatic compound(s) and tri-alkylated aromatic compound(s), comprising the step of contacting alkylatable aromatic compound(s) with the polyalkylated ... | 09/21/2010 |
| 7781632 | Integrated processes for making detergent range alkylbenzenes from C5-C6-containing feeds Integrated processes for making detergent range alkylbenzenes from C5-C6-containing feeds involve feed pretreatment and/or selective hydrogenation to enable acceptable quality alkylbenzene production at attractive capital and operating costs. | 08/24/2010 |
| 7781631 | Integrated processes for making detergent range alkylbenzenes from C-C-containing feeds Integrated processes for making detergent range alkylbenzenes from C5-C6-containing feeds involve feed pretreatment and/or selective hydrogenation to enable acceptable quality alkylbenzene production at attractive capital and operating costs. | 08/24/2010 |
| 7781630 | Integrated processes for making detergent range alkylbenzenes from C-C-containing feeds Integrated processes for making detergent range alkylbenzenes from C5-C6-containing feeds involve feed pretreatment and/or selective hydrogenation to enable acceptable quality alkylbenzene production at attractive capital and operating costs. | 08/24/2010 |
| 7745674 | Alkylation slurry reactor A process for alkylation of benzene, including: feeding benzene, a polyalkylate, and a catalyst to a reactor comprising a first and a second reaction zone; reacting the benzene and the polyalkylate in the first reaction zone under transalkylation conditions to form ... | 06/29/2010 |
| 7732651 | Method of making an alkylated aromoatic using acidic ionic liquid catalyst A process for alkylating an aromatic compound containing no hydroxyl groups comprising reacting at least one non-hydroxyl containing aromatic compound with at least one olefinic oligomer in the presence of an acidic ionic liquid catalyst, wherein the olefinic oligom... | 06/08/2010 |
| 7728184 | Process for the dehydrogenation of alkyl-aromatic hydrocarbons for the production of vinyl-aromatic monomers Process for the production of vinyl-aromatic monomers which comprises: a) feeding an aromatic stream and an olefinic stream to alkylation; b) feeding the reaction product coming from the alkylation section to a first separation section; c) recovering the mono-alkyla... | 06/01/2010 |
| 7696394 | Treatment of alkylation catalyst poisons with dehydrogenation Methods and processes for reducing alkylation catalyst poisoning are described herein. Such methods generally include providing a dehydrogenation system including a dehydrogenation reactor and a separation system, wherein the separation system includes a first colum... | 04/13/2010 |
| 7683226 | Integrated processes for making detergent range alkylbenzenes from C-C-containing feeds Integrated processes for making detergent range alkylbenzenes from C5-C6-containing feeds involve feed pretreatment and/or selective hydrogenation to enable acceptable quality alkylbenzene production at attractive capital and operating costs. | 03/23/2010 |
| 7674940 | Process for the preparation of detergent compounds A process for the preparation of detergents containing a relatively low amount of isoparaffins, involving separating a hydrocarbonaceous product stream from a Fischer-Tropsch process using a cobalt based catalyst and producing normally liquid and normally solid hydr... | 03/09/2010 |
| RE41136 | Process for preparing 2,6-dialkylnaphthalene The present invention relates to a process of preparing dialkylnaphthylenes and polyalkylenenaphthyleneates dialkylnaphthalenes and polyalkylenenaphthalates. ... | 02/16/2010 |
| 7655823 | Manufacture of xylenes from reformate A process is provided for the production of xylenes from reformate. The process is carried out by methylating the benzene, toluene, or both present in the reformate to produce a resulting product having a higher xylenes content than the reformate. Greater than equil... | 02/02/2010 |
| 7652182 | Energy integrated processes including alkylation and transalkylation for making detergent range alkylbenzenes Integrated, energy efficient process for making detergent range alkylbenzenes, heavies coproduced during the alkylation of benzene with olefin using a solid, acidic catalyst are transalkylated. Spent benzene from regeneration of the solid, acidic catalyst used for a... | 01/26/2010 |
| 7652181 | Alkylation reactor design with effluent recycle and impure benzene regeneration An improved alkylation reactor design is disclosed. The design uses reactor effluent recycle to reduce the difference in temperature across the reaction zone improving selectivity and insuring the maintenance of a liquid phase in the reactor. ... | 01/26/2010 |
| 7642389 | Energy integrated processes including alkylation and transalkylation for making detergent range alkylbenzenes Integrated, energy efficient process for making detergent range alkylbenzenes use a combination of a low benzene to olefin feed ratio for alkylation, alkylbenzene refining system operation and a transalkylation of dialkylbenzene co-produced during alkylation is used... | 01/05/2010 |
| 7638666 | Processes and apparatus for making detergent range alkylbenzenes using transalkylation Dialkylbenzenes are transalkylated in the presence of benzene and solid catalyst. The transalkylation product is subjected to distillation to provide a lower-boiling, benzene-containing fraction which is fed to a transalkylation reactor as at least a portion of the ... | 12/29/2009 |
| 7622621 | Preparation of alkylaromatic hydrocarbons and alkylaryl sulfonates In a process for preparing an alkylaromatic hydrocarbon composition an olefinic hydrocarbon mixture and an aromatic compound are contacted under alkylation conditions with an aromatic alkylation catalyst selected from a homogeneous acid catalyst and heterogeneous ac... | 11/24/2009 |
| 7608745 | Process for production of propylene and ethylbenzene from dilute ethylene streams A process for producing propylene is provided which includes directing an ethylene stream from an ethylene reaction zone to a propylene reaction zone; directing a butene stream to the propylene reaction zone; reacting the ethylene stream with the butene stream in th... | 10/27/2009 |
| 7576247 | Processes for making detergent range alkylbenzenes Spent benzene from a regeneration of a catalyst or solid sorbent in an alkylbenzene complex is subjected to a rough distillation and the benzene fraction from the rough distillation is used a at least a portion of the benzene for a unit operation in the alkylbenzene... | 08/18/2009 |
| 7576248 | Process for removal of oxygenates from a paraffin stream The present invention comprises a process for removal of oxygenates from a paraffin-rich or olefin-rich paraffin stream which comprises passing a feed stream, comprising one or more C10 to C15 feed paraffins or C10 to C15 ... | 08/18/2009 |
| 7560605 | Process for producing branched olefins from linear olefin/paraffin feed A process for producing branched olefins from a mixed linear olefin/paraffin isomerisation feed comprising linear olefins having at least 7 carbon atoms in 5-50% w comprising in a first stage skeletally isomerising linear olefins in the isomerisation feed and in a s... | 07/14/2009 |
| 7525006 | Process for producing cumene This cumene process involves contacting, in an alkylation zone, a first benzene recycle stream and a propylene feed stream with an alkylation catalyst to form cumene. In a transalkylation zone, a polyisopropyl benzene recycle stream and a second benzene recycle stre... | 04/28/2009 |
| 7525002 | Gasoline production by olefin polymerization with aromatics alkylation A process for the production of high octane number gasoline from light refinery olefins, typically from the catalytic cracking unit, and benzene-containing aromatic streams such as reformate. A portion of the light olefins including ethylene and propylene is polymer... | 04/28/2009 |
| 7525004 | Process for producing ethylbenzene This ethylbenzene process involves contacting, in an alkylation zone, a first benzene recycle stream and an ethylene feed stream with an alkylation catalyst to form ethylbenzene. In a transalkylation zone, a polyethylbenzene recycle stream and a second benzene recyc... | 04/28/2009 |
| 7525003 | Process for producing ethylbenzene This ethylbenzene process involves contacting, in an alkylation zone, a first benzene recycle stream and an ethylene feed stream with an alkylation catalyst to form ethylbenzene. In a transalkylation zone, a polyethylbenzene recycle stream and a second benzene recyc... | 04/28/2009 |
| 7525005 | Process for producing cumene This cumene process involves contacting, in an alkylation zone, a first benzene recycle stream and a propylene feed stream with an alkylation catalyst to form cumene. In a transalkylation zone, a polyisopropylbenzene recycle stream and a second benzene recycle strea... | 04/28/2009 |
| 7525001 | Process for preparation of 2,6-dialkyltetralin The present invention provides a novel process for highly selective preparation of 2,6-dialkyltetralin, a key precursor for 2,6-dimethylnaphthalene (2,6-DMN), which does not require an extra step for purifying various isomers obtained from the conventional processes... | 04/28/2009 |
| 7498472 | Process for producing ethylbenzene This ethylbenzene process involves contacting, in an alkylation zone, a first benzene recycle stream and an ethylene feed stream with an alkylation catalyst to form ethylbenzene. In a transalkylation zone, a polyethylbenzene recycle stream and a second benzene recyc... | 03/03/2009 |
| 7498471 | Process for producing cumene In an alkylation zone, a benzene recycle stream and a propylene feed stream are contacted with an alkylation catalyst to convert the propylene and benzene into cumene. In a transalkylation zone, a polyisopropylbenzene stream and a benzene recycle stream are contacte... | 03/03/2009 |
| 7420095 | Purification process of aromatics Process for reduction of bromine index in aromatics, comprising the steps of feeding an aromatics feed stream which contains olefin impurities to a distillation column; withdrawing an overhead stream from the distillation column; subjecting at least a portion of the... | 09/02/2008 |
| 7411101 | Production of alkylaromatic compounds A process for producing a monoalkylation aromatic product, such as ethylbenzene and cumene, utilizing an alkylation reactor zone and a transalkylation zone in series or a combined alkylation and transkylation reactor zone. ... | 08/12/2008 |
| 7399894 | Process for producing cumene A process for producing cumene is provided which comprises the step of contacting benzene and propylene under at least partial liquid phase alkylating conditions with a particulate molecular sieve alkylation catalyst, wherein the particles of said alkylation catalys... | 07/15/2008 |
| 7396966 | Olefinic feedstock treatment processes Aromatic by-products are sorbed from mono-olefin-containing feedstocks of olefins having from about 6 to 22 carbon atoms per molecule that contain aromatic by-products having from 7 to 22 carbon atoms per molecule. A benzene-containing regenerant displaces and desor... | 07/08/2008 |
