Patents by Inventor Shriniwas Chauk

Shriniwas Chauk 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: 12006413
    Abstract: Polymer polyols (“PMPOs”), processes for their production, and the use of such PMPOs, particularly in the production of flexible polyurethane foams. The PMPOs are produced using an ethylenically unsaturated composition that includes a crosslinker that results in crosslinks in the PMPO polymer particles that may decompose when exposed to flame temperatures. The PMPOs is capable of providing a flexible polyurethane foam that may exhibit combustibility resistance properties.
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: June 11, 2024
    Assignee: Covestro LLC
    Inventors: Rick Adkins, Shriniwas Chauk, Jose Pazos
  • Publication number: 20230220174
    Abstract: Polymer polyols (“PMPOs”), processes for their production, and the use of such PMPOs, particularly in the production of flexible polyurethane foams. The PMPOs are produced using an ethylenically unsaturated composition that includes a crosslinker that results in crosslinks in the PMPO polymer particles that may decompose when exposed to flame temperatures. The PMPOs is capable of providing a flexible polyurethane foam that may exhibit combustibility resistance properties.
    Type: Application
    Filed: January 12, 2022
    Publication date: July 13, 2023
    Inventors: Rick Adkins, Shriniwas Chauk, Jose Pazos
  • Publication number: 20070060690
    Abstract: The present invention relates to novel polymer polyols which have low viscosities and high hydroxyl numbers, and to a process for the preparation of these novel polymer polyols. These polymer polyols have hydroxyl numbers of ?20, solids contents of about 30 to about 65% by weight and a viscosity that is less than or equal to: be[2.7c]. These comprise the reaction product of a base polyol, a preformed stabilizer and at least one ethylenically unsaturated monomer, in the presence of a free-radical polymerization initiator and at least one polymer control agent. The base polyol has a hydroxyl number of 60 to 1900, a functionality of 1 to 10, and an equivalent weight of 30 to 900.
    Type: Application
    Filed: September 9, 2005
    Publication date: March 15, 2007
    Inventors: Rick Adkins, Shriniwas Chauk
  • Publication number: 20060025492
    Abstract: The present invention relates to ultra-high solids content polymer polyols which have good filterability while maintaining a reasonable viscosity, and to a process for the preparation of these ultra-high solids contents polymer polyols. These polymer polyols comprise the free-radical polymerization product of (A) a base polyol, (B) a pre-formed stabilizer, (C) at least one ethylenically unsaturated monomer, (D) at least one free-radical polymerization initiator, and (E) at least one chain transfer agent. The solids contents varies from 60% to about 85% by weight.
    Type: Application
    Filed: August 2, 2004
    Publication date: February 2, 2006
    Inventor: Shriniwas Chauk