Patents by Inventor Gautam Tavanappa Kalghatgi
Gautam Tavanappa Kalghatgi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10041016Abstract: A two-step process for the oligomerization and hydration of a mixed butenes feed is provided and is implemented in a two-stage system. The two-step process yields a product consisting of diisobutenes (DIBs) and mixed butanols. The DIBs are produced via the selective oligomerization of isobutene in a first stage and the mixed butanols are produced via the hydration, in a second stage, of mixed butenes that remain unreacted in the first stage.Type: GrantFiled: June 1, 2016Date of Patent: August 7, 2018Assignee: SAUDI ARABIAN OIL COMPANYInventors: Kareemuddin M. Shaik, Wei Xu, Thamer Mohammed, Hassan Babiker, Gautam Tavanappa Kalghatgi
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Publication number: 20160272913Abstract: A two-step process for the oligomerization and hydration of a mixed butenes feed is provided and is implemented in a two-stage system. The two-step process yields a product consisting of diisobutenes (DIBs) and mixed butanols. The DIBs are produced via the selective oligomerization of isobutene in a first stage and the mixed butanols are produced via the hydration, in a second stage, of mixed butenes that remain unreacted in the first stage.Type: ApplicationFiled: June 1, 2016Publication date: September 22, 2016Inventors: KAREEMUDDIN M. SHAIK, WEI XU, THAMER MOHAMMED, HASSAN BABIKER, GAUTAM TAVANAPPA KALGHATGI
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Patent number: 9447346Abstract: A two-step process for the oligomerization and hydration of a mixed butenes feed is provided and is implemented in a two-stage system. The two-step process yields a product consisting of diisobutenes (DIBs) and mixed butanols. The DIBs are produced via the selective oligomerization of isobutene in a first stage and the mixed butanols are produced via the hydration, in a second stage, of mixed butenes that remain unreacted in the first stage.Type: GrantFiled: December 11, 2013Date of Patent: September 20, 2016Assignee: SAUDI ARABIAN OIL COMPANYInventors: Kareemuddin M. Shaik, Wei Xu, Thamer Mohammed, Hassan Babiker, Gautam Tavanappa Kalghatgi
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Publication number: 20150159102Abstract: A two-step process for the oligomerization and hydration of a mixed butenes feed is provided and is implemented in a two-stage system. The two-step process yields a product consisting of diisobutenes (DIBs) and mixed butanols. The DIBs are produced via the selective oligomerization of isobutene in a first stage and the mixed butanols are produced via the hydration, in a second stage, of mixed butenes that remain unreacted in the first stage.Type: ApplicationFiled: December 11, 2013Publication date: June 11, 2015Applicant: Saudi Arabian Oil CompanyInventors: KAREEMUDDIN M. SHAIK, WEI XU, THAMER MOHAMMED, HASSAN BABIKER, GAUTAM TAVANAPPA KALGHATGI
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Patent number: 8790422Abstract: Gasoline fuel formulation having a laminar burning velocity SL which is equal to or below that of isooctane at a pressure of 1 bar, a temperature of 300 K and stoichiometric air/fuel mixture strength. The formulation can be used to reduce pre-ignition in a turbocharged spark ignition engine, in particular when operating with an inlet pressure above 1.5 bar absolute. The formulation can thus also be used to reduce engine damage. The invention also provides a method of preparing a gasoline fuel, by mixing gasoline fuel components to achieve a laminar burning velocity SL for the resultant mixture which is equal to or below that of isooctane at a pressure of 1 bar, a temperature of 300 K and stoichiometric air/fuel mixture strength. It further provides a method for selecting a gasoline fuel for use in a turbocharged spark ignition engine, based on its laminar burning velocity SL.Type: GrantFiled: May 10, 2011Date of Patent: July 29, 2014Assignee: Shell Oil CompanyInventors: Roger Francis Cracknell, Trevor James Davies, Gautam Tavanappa Kalghatgi
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Publication number: 20110271926Abstract: Gasoline fuel formulation having a laminar burning velocity SL which is equal to or below that of isooctane at a pressure of 1 bar, a temperature of 300 K and stoichiometric air/fuel mixture strength. The formulation can be used to reduce pre-ignition in a turbocharged spark ignition engine, in particular when operating with an inlet pressure above 1.5 bar absolute. The formulation can thus also be used to reduce engine damage. The invention also provides a method of preparing a gasoline fuel, by mixing gasoline fuel components to achieve a laminar burning velocity SL for the resultant mixture which is equal to or below that of isooctane at a pressure of 1 bar, a temperature of 300 K and stoichiometric air/fuel mixture strength. It further provides a method for selecting a gasoline fuel for use in a turbocharged spark ignition engine, based on its laminar burning velocity SL.Type: ApplicationFiled: May 10, 2011Publication date: November 10, 2011Applicant: SHELL OIL COMPANYInventors: Roger Francis CRACKNELL, Trevor James DAVIES, Gautam Tavanappa KALGHATGI
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Patent number: 6565617Abstract: The invention provides an unleaded gasoline composition comprising a major amount of hydrocarbons boiling in the range from 30° C. to 230° C. and 2% to 20% by volume, based on the gasoline composition, of diisobutylene, the gasoline composition having Research Octane Number (RON) in the range 91 to 101, Motor Octane Number (MON) in the range 81.3 to 93, and relationship between RON and MON such that (a) when 101≧RON>98, (57.65+0.35 RON)≧MON>(3.2 RON−230.2), and (b) when 98≧RON≧91, (57.65+0.35 RON)≧MON≧(0.3 RON+54), with the proviso that the gasoline composition does not contain a MON-boosting aromatic amine optionally substituted by one or more halogen atoms and/or C1-10 hydrocarbyl groups; a process for the preparation of such a gasoline composition; and a method of operating an automobile powered by a spark-ignition engine equipped with a knock sensor, with improved power output.Type: GrantFiled: July 31, 2001Date of Patent: May 20, 2003Assignee: Shell Oil CompanyInventor: Gautam Tavanappa Kalghatgi
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Publication number: 20020166283Abstract: The invention provides an unleaded gasoline composition comprising a major amount of hydrocarbons boiling in the range from 30° C. to 230° C. and 2% to 20% by volume, based on the gasoline composition, of diisobutylene, the gasoline composition having Research Octane Number (RON) in the range 91 to 101, Motor Octane Number (MON) in the range 81.Type: ApplicationFiled: July 31, 2001Publication date: November 14, 2002Inventor: Gautam Tavanappa Kalghatgi
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Patent number: 5948126Abstract: The invention provides a gasoline composition which comprises a mixture of hydrocarbons of the gasoline boiling range containing an octane requirement reducing amount of an additive which comprises a furfuryl alcohol resin or derivative thereof and the use of the additive in a concentrate for a preparation of such gasoline composition and a method of operating a spark-ignition engine using such gasoline composition.Type: GrantFiled: July 7, 1998Date of Patent: September 7, 1999Assignee: Shell Oil CompanyInventors: David John Barratt, Gautam Tavanappa Kalghatgi, Jian Lin
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Patent number: 5891202Abstract: The invention provides a gasoline composition which comprises a mixture of hydrocarbons of the gasoline boiling range containing an octane requirement reducing amount of an additive which comprises a furfuryl alcohol resin or derivative thereof and the use of the additive in a concentrate for a preparation of such gasoline composition and a method of operating a spark-ignition engine using such gasoline composition.Type: GrantFiled: December 17, 1996Date of Patent: April 6, 1999Assignee: Shell Oil CompanyInventors: David John Barratt, Gautam Tavanappa Kalghatgi, Jian Lin