Patents by Inventor Puvin Pichai

Puvin Pichai 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).

  • Process for producing methyl mercaptan from dimethyl sulfide
    Patent number: 10577314
    Abstract: The present invention generally relates to the manufacture of methyl mercaptan using recycled dimethyl sulfide. In particular, the invention relates to a process for the continuous production of methyl mercaptan via the catalytic conversion of dimethyl sulfide using a non-promoted Al2O3 catalyst at low temperatures.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: March 3, 2020
    Assignee: Novus International, Inc.
    Inventors: Puvin Pichai, James Rolston, Stephan Schubert, Leslaw Mleczko, Jens Assmann, Edwin Gross-Hardt, Pankaj Ajmera
  • PROCESS FOR PRODUCING METHYL MERCAPTAN FROM DIMETHYL SULFIDE
    Publication number: 20170342028
    Abstract: The present invention generally relates to the manufacture of methyl mercaptan using recycled dimethyl sulfide. In particular, the invention relates to a process for the continuous production of methyl mercaptan via the catalytic conversion of dimethyl sulfide using a non-promoted Al2O3 catalyst at low temperatures.
    Type: Application
    Filed: May 25, 2017
    Publication date: November 30, 2017
    Inventors: Puvin Pichai, James Rolston, Stephan Schubert, Leslaw Mleczko, Jens Assmann, Edwin Gross-Hart, Pankaj Ajmera
  • Process for the manufacture of acrolein
    Patent number: 9115067
    Abstract: The invention generally relates to the manufacture of acrolein. In particular, the invention generally relates to a process for the continuous production of acrolein via the catalytic oxidation of propylene.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: August 25, 2015
    Assignee: Novus International, Inc.
    Inventors: Donald L. Bunning, James D. Rolston, David A. LaBrot, Puvin Pichai, John Patrick Dever, Olan Stanley Fruchey, Michael L. Hutchison, Kevin Roy
  • High-solids coatings resins via controlled radical polymerization
    Patent number: 6762263
    Abstract: Processes for the controlled radical polymerization of acrylic and related polymers to produce improved low VOC coating materials, or powder coating compositions, the novel polymers so produced, the catalyst systems employed, processes for application of the improved coatings, coatings so produced and objects coated on at least one surface with the novel coatings are disclosed.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: July 13, 2004
    Assignee: ATOFINA Chemicals, Inc.
    Inventors: Peter A. Callais, Puvin Pichai, Michael G. Moskal, Olivier Guerret
  • High-solids coatings resins via controlled radical polymerization
    Publication number: 20030149205
    Abstract: Processes for the controlled radical polymerization of acrylic and related polymers to produce improved low VOC coating materials, or powder coating compositions, the novel polymers so produced, the catalyst systems employed, processes for application of the improved coatings, coatings so produced and objects coated on at least one surface with the novel coatings are disclosed.
    Type: Application
    Filed: February 1, 2002
    Publication date: August 7, 2003
    Inventors: Peter A. Callais, Puvin Pichai, Michael G. Moskal, Olivier Guerret
  • Production of a product enriched in isoflavone values from natural sources
    Patent number: 6517840
    Abstract: A process for recovering isoflavone values from a biomass in which the isoflavone values are extracted from the biomass with a selective solvent for the isoflavone values, solid isoflavone values and the selective solvent are contacted with a nonsolvent or antisolvent for the isoflavone value which is miscible with the selective solvent. Optionally the nonsolvent or antisolvent is admixed with water during the contact with the solid isoflavone values to improve the purity and recovery of the solid isoflavone values.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: February 11, 2003
    Assignee: Cognis Corporation
    Inventors: William G. Kozak, Puvin Pichai, Patricia J. Voorstad, Sang I. Kang, Michael Rueter, Jonathan D. Thomas
  • Defoamer process
    Patent number: 6251958
    Abstract: A process for preparing a defoamer composition by providing a high-shear, in-line mixer having a rotor-stator assembly with at least one concentric set of shearing teeth which rotate at a tip speed of up to about 25 meters per second and feeding to said mixer a melt of a hydrophobic defoaming agent along with a functional carrier liquid at a controlled mass flow rate and temperature. After mixing, the mixture is cooled and discharged into a receiving vessel.
    Type: Grant
    Filed: April 8, 1999
    Date of Patent: June 26, 2001
    Assignee: Henkel Corporation
    Inventors: Puvin Pichai, Kenneth Breindel