Patents by Inventor Biju M. Devassy

Biju M. Devassy 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).

  • Publication number: 20230211324
    Abstract: Disclosed are shaped dehydrogenation catalysts, methods for making the catalysts, and methods for dehydrogenating a hydrocarbon using the catalyst. A method for making the shaped dehydrogenation catalyst can include combining a group 13 metal precursor and a group 1 metal precursor with a catalyst support precursor to form a shapeable material, shaping the shapeable material to form a wet shaped material, drying the wet shaped material to form a dry shaped material, and calcining the dry shaped material to form the shaped dehydrogenation catalyst.
    Type: Application
    Filed: June 10, 2021
    Publication date: July 6, 2023
    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Biju M. DEVASSY, Nigit J. MELEPPURAM, Naresh DHACHAPALLY, Vinod S. NAIR
  • Publication number: 20230211318
    Abstract: A supported non-oxidative alkane dehydrogenation catalyst and a method for making and using the same is disclosed. The supported non-oxidative alkane dehydrogenation catalyst can include a vanadium oxide, a rare earth metal oxide, an alkali metal oxide, and a support containing silica and alumina.
    Type: Application
    Filed: June 10, 2021
    Publication date: July 6, 2023
    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Naresh DHACHAPALLY, Nigit J. MELEPPURAM, Biju M. DEVASSY, Vinod S. NAIR
  • Patent number: 11541374
    Abstract: A catalyst for non-oxidative dehydrogenation of alkanes and a method for making and using the same is disclosed. The catalyst can include vanadium oxide derived from vanadyl oxalate. More particularly the catalyst is prepared by a method comprising the steps of: (a) contacting a transition alumina support with an aqueous solution comprising a vanadium carboxylate material solubilized therein; (b) heating the contacted alumina support to remove the water and produce a catalyst precursor material in solid form; and (c) heating the solid catalyst precursor material in the presence of an oxidizing source at a temperature of 500 to 800° C. to produce an alumina supported catalytic material comprising vanadium oxide. The catalyst can be further modified with an alkali metal oxide like potassium oxide, the precursor thereof being introduced with the impregnation solution.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: January 3, 2023
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Biju M. Devassy, Naresh Dhachapally, Nigit J. Meleppuram, Vinod S. Nair
  • Publication number: 20210339227
    Abstract: A catalyst for non-oxidative dehydrogenation of alkanes and a method for making and using the same is disclosed. The catalyst can include vanadium oxide derived from vanadyl oxalate. More particularly the catalyst is prepared by a method comprising the steps of: (a) contacting a transition alumina support with an aqueous solution comprising a vanadium carboxylate material solubilized therein; (b) heating the contacted alumina support to remove the water and produce a catalyst precursor material in solid form; and (c) heating the solid catalyst precursor material in the presence of an oxidizing source at a temperature of 500 to 800° C. to produce an alumina supported catalytic material comprising vanadium oxide. The catalyst can be further modified with an alkali metal oxide like potassium oxide, the precursor thereof being introduced with the impregnation solution.
    Type: Application
    Filed: September 3, 2019
    Publication date: November 4, 2021
    Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Biju M. DEVASSY, Naresh DHACHAPALLY, Nigit J. MELEPPURAM, Vinod S. NAIR
  • Patent number: 9181207
    Abstract: Methods of reducing or maintaining the value of an alkylene oxide production parameter (such as alkylene oxide production rate) in a process of making an alkylene oxide by reacting an alkylene and oxygen over a high efficiency catalyst are shown and described. One method comprises reducing the concentration of oxygen in the reactor feed gas to reduce or maintain the value of the alkylene oxide production parameter.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: November 10, 2015
    Assignee: Dow Technology Investments LLC
    Inventors: Liping Zhang, Sasanka Raha, Biju M. Devassy, Balu S. Uphade, Arun G. Basrur, Ailene Gardner Phillips, Ravindra Tupe
  • Patent number: 9162215
    Abstract: Methods are provided for producing epoxidation catalysts. The present methods are able to produce catalysts having the desired loading levels of catalytic species at a lower vacuum level (having a higher minimum residual pressure) than previously appreciated by the art, thereby providing equipment cost and time savings.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: October 20, 2015
    Assignee: DOW TECHNOLOGY INVESTMENTS LLC
    Inventors: Biju M. Devassy, Albert C. Liu, Hwaili Soo
  • Publication number: 20140316150
    Abstract: Methods of reducing or maintaining the value of an alkylene oxide production parameter (such as alkylene oxide production rate) in a process of making an alkylene oxide by reacting an alkylene and oxygen over a high efficiency catalyst are shown and described. One method comprises reducing the concentration of oxygen in the reactor feed gas to reduce or maintain the value of the alkylene oxide production parameter.
    Type: Application
    Filed: December 6, 2012
    Publication date: October 23, 2014
    Applicant: Dow Technology Investments LLC
    Inventors: Liping Zhang, Sasanka Raha, Biju M. Devassy, Balu S. Uphade, Arun G. Basrur, Ailene Gardner Phillips, Ravindra Tupe