Patents by Inventor Raj Deshpande

Raj Deshpande 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).

  • Patent number: 9505672
    Abstract: Olefins are produced by the reductive dehydroxylation of vicinal polyols or esters thereof, or a combination thereof, in a liquid reaction medium, under a hydrogen atmosphere, at a temperature from 50° C. to 250° C., in the presence of a halogen-based, preferably iodine-based, catalyst. Examples of the catalyst, which may be included independently or generated in situ, are iodine (I2), hydroiodic acid (HI), iodic acid (HIO3), lithium iodide (LiI), and combinations thereof.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 29, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore, John R. Briggs
  • Patent number: 9499454
    Abstract: Olefins may be produced by the reductive dehydroxylation of vicinal polyols and/or their respective esters, in an aqueous reaction medium, under a hydrogen atmosphere, under suitable conditions, and in the presence of a halogen-based, preferably iodine-based, catalyst, wherein a solubility enhancing agent is employed to increase the solubility of the iodine-based catalyst in the aqueous reaction medium.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 22, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore
  • Patent number: 9487455
    Abstract: Crude alcohol streams are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. The process includes autogenous gas pressure or a gas pressure from 1 psig (˜6.89 KPa) to 2000 psig (˜13.79 MPa), a temperature from 50° C. to 250° C., a liquid reaction medium, and a molar ratio of alcohol to halogen from 1:10 to 100:1.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: November 8, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore
  • Patent number: 9469575
    Abstract: Olefins may be produced by the non-reductive dehydroxylation of vicinal polyols and/or their respective esters, in a liquid reaction medium, under a substantially non-reductive atmosphere, in the presence of a halogen-based, preferably iodine-based, catalyst. The reaction medium may be aqueous, non-aqueous, or a combination thereof, and may in some embodiments include a solubility enhancing agent.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: October 18, 2016
    Assignee: Dow Global Technologies LLC
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore
  • Patent number: 9464031
    Abstract: The present invention provides a process for producing alkyl amines by dehydroxylation of aminoalcohols. This provides an alternate reaction route for making alkyl amines, such as 2-methylpropane-2-amine and its derivatives.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: October 11, 2016
    Assignee: ANGUS CHEMICAL COMPANY
    Inventors: Paul Davis, Raj Deshpande, George David Green, Vandana Pandey
  • Patent number: 9255061
    Abstract: The present invention provides a process for producing nitroalkanes by dehydroxylation of nitroalcohols. This provides an alternate reaction route for making nitroalkanes, such as 2-nitropropane and its derivatives.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: February 9, 2016
    Assignee: ANGUS CHEMICAL COMPANY
    Inventors: Paul Davis, Raj Deshpande, George David Green, Vandana Pandey
  • Publication number: 20150329471
    Abstract: The present invention provides a process for producing alkyl amines by dehydroxylation of aminoalcohols. This provides an alternate reaction route for making alkyl amines, such as 2-methylpropane-2-amine and its derivatives.
    Type: Application
    Filed: November 21, 2013
    Publication date: November 19, 2015
    Inventors: Paul Davis, Raj Deshpande, George David Green, Vandana Pandey
  • Publication number: 20150329470
    Abstract: The present invention provides a process for producing nitroalkanes by dehydroxylation of nitroalcohols. This provides an alternate reaction route for making nitroalkanes, such as 2-nitropropane and its derivatives.
    Type: Application
    Filed: November 21, 2013
    Publication date: November 19, 2015
    Inventors: Paul Davis, Raj Deshpande, George David Green, Vandana Pandey
  • Publication number: 20140378729
    Abstract: Olefins may be produced by the reductive dehydroxylation of vicinal polyols and/or their respective esters, in an aqueous reaction medium, under a hydrogen atmosphere, under suitable conditions, and in the presence of a halogen-based, preferably iodine-based, catalyst, wherein a solubility enhancing agent is employed to increase the solubility of the iodine-based catalyst in the aqueous reaction medium.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 25, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore
  • Publication number: 20140378730
    Abstract: Olefms may be produced by the non-reductive dehydroxylation of vicinal polyols and/or their respective esters, in a liquid reaction medium, under a substantially non- reductive atmosphere, in the presence of a halogen-based, preferably iodine-based, catalyst. The reaction medium may be aqueous, non- aqueous, or a combination thereof, and may in some embodiments include a solubility enhancing agent.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 25, 2014
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore
  • Publication number: 20140357920
    Abstract: Olefins are produced by the reductive dehydroxylation of vicinal polyols or esters thereof, or a combination thereof, in a liquid reaction medium, under a hydrogen atmosphere, at a temperature from 50° C. to 250° C., in the presence of a halogen-based, preferably iodine-based, catalyst. Examples of the catalyst, which may be included independently or generated in situ, are iodine (I2), hydroiodic acid (HI), iodic acid (HIO3), lithium iodide (LiI), and combinations thereof.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 4, 2014
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore, John R. Briggs
  • Publication number: 20140357921
    Abstract: Crude alcohol streams are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. The process includes autogenous gas pressure or a gas pressure from 1 psig (˜6.89 KPa) to 2000 psig (˜13.79 MPa), a temperature from 50° C. to 250° C., a liquid reaction medium, and a molar ratio of alcohol to halogen from 1:10 to 100:1.
    Type: Application
    Filed: December 5, 2012
    Publication date: December 4, 2014
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore
  • Publication number: 20140343340
    Abstract: Polyether polyols, derivatives and combinations thereof are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. Derivatives include polyether polyols incorporated in polyurethanes. The process includes gas pressure from 1 psig (˜6.89 KPa) to 2000 psig (˜13.79 MPa), a temperature from 50° C. to 250° C., a liquid reaction medium, and a molar ratio of the starting material to halogen atoms from 1:10 to 100:1.
    Type: Application
    Filed: December 5, 2012
    Publication date: November 20, 2014
    Inventors: Raj Deshpande, Paul Davis, Vandana Pandey, Nitin Kore, John R. Briggs
  • Publication number: 20060264677
    Abstract: The present invention provides an improved process for the production of tertiary amyl hydroperoxide by the liquid phase oxidation of isopentane in presence of air or molecular oxygen as oxidant using the oxides of Group IIA metals such as magnesium, calcium, strontium and barium in high pressure reactor under stirring conditions at a temperature ranging between 110°-180° C. and at moderate pressures for a period of 0.1-12 h. The catalyst reused for sevral times without affecting its catalytic performance. The present invention produces a tertiary amyl hydroperoxide with 40-60% selectivity and tertiary amyl alcohol, which has a numerius industrial applications.
    Type: Application
    Filed: March 14, 2006
    Publication date: November 23, 2006
    Inventors: Vilas Rane, Raj Deshpande, Raghunath Chaudhari
  • Publication number: 20060142620
    Abstract: A palladium complex catalyzed process for the oxidation of linear alkanes is proposed which employs molecular oxygen as the oxidant to produce secondary alcohols and ketones in high selectivity, the said catalyst is a single entity and does not requires the use of any co-catalyst or solvent.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 29, 2006
    Applicant: Council of Scientific and Industrial Research
    Inventors: Raj Deshpande, Makarand Diwakar, Raghunath Chaudhari
  • Publication number: 20060100463
    Abstract: The present invention describes an improved catalyst and process for the selective hydrogenation of nitro aromatics, nitrosoaromatics and aromatic hydroxylamines to their corresponding amines using gaseous hydrogen, in the presence of soluble iron compounds as a catalyst and optionally other reducible groups.
    Type: Application
    Filed: December 24, 2003
    Publication date: May 11, 2006
    Inventors: Avinash Mahajan, Prakash Ozarde, Raj Deshpande, Raghunath Chaudhari
  • Publication number: 20060094905
    Abstract: The present invention provides a process for the production of a mixture of alcohols and ketones by the liquid phase oxidation of higher alkanes using a catalyst system consisting of transition group metal such as palladium and support such as alumina, silica, carbon, preferably carbon in the presence of alkyl hydroperoxide as oxygen carrier, under stirring conditions at a temperature range of 10°-120° C. and at atmospheric pressure in a stirred glass reactor for a period of 1-30 h. The present invention produces a mixture of alcohols and ketones with high selectivity (preferably 60-90%) along with other byproducts such as diketones and acids.
    Type: Application
    Filed: October 29, 2004
    Publication date: May 4, 2006
    Inventors: Raj Deshpande, Vilas Rane, Raghunath Chaudhari
  • Publication number: 20060029048
    Abstract: A method of, and means for accomplishing the method, optimizing system resources in a network (102) using packetized voice telephony consists of the following steps: determining (302) that a packetized voice call from an originating gateway (104) terminates at a non-human voice interface system (108), wherein the packetized voice call is assigned a specified high priority level; and transmitting (304) signaling to cause the originating gateway (104) to transmit the packetized voice call to the non-human voice interface system (108) at a lower priority than the specified nigh priority level.
    Type: Application
    Filed: October 3, 2005
    Publication date: February 9, 2006
    Inventors: Raj Deshpande, Roger Ady, Chris Bach
  • Patent number: 6975621
    Abstract: A method of, and means for accomplishing the method, optimizing system resources in a network (102) using packetized voice telephony consists of the following steps: determining (302) that a packetized voice call from an originating gateway (104) terminates at a non-human voice interface system (108), wherein the packetized voice call is assigned a specified high priority level; and transmitting (304) signaling to cause the originating gateway (104) to transmit the packetized voice call to the non-human voice interface system (108) at a lower priority than the specified high priority level.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: December 13, 2005
    Assignee: Motorola, Inc
    Inventors: Raj Deshpande, Roger Ady, Chris Bach
  • Publication number: 20050215829
    Abstract: The present invention provides an improved process for the synthesis of ?-substituted acroleins from olefins by a tandem hydroformylation and Mannich reaction sequence in the presence of syngas and formaldehyde, wherein the two catalysts are segregated into two different phases thereby preventing deactivation of the catalysts by each other, and yielding a highly selective and active catalyst.
    Type: Application
    Filed: March 26, 2004
    Publication date: September 29, 2005
    Applicant: Council of Scientific and Industrial Research
    Inventors: Raj Deshpande, Makarand Diwakar, Raghunath Chaudhari