Patents Assigned to PATCHAM USA LLC
  • Method for preparing low density polyurethanes using catalysts that are free from tertiary amines and tin
    Patent number: 12258435
    Abstract: Disclosed is a method for preparing a soft, water blown, polyurethane foam product, or microcellular elastomer using a stable, liquid, tertiary amine and tin-free polyurethane catalyst. The catalyst contains a combination of bismuth and sodium carboxylates.
    Type: Grant
    Filed: November 4, 2024
    Date of Patent: March 25, 2025
    Assignee: PATCHAM USA LLC
    Inventors: Stephen Edward Cavender, Rajeshkumar K. Patel, Nishith K. Patel
  • Efficient MEKO-free anti-skinning agent
    Patent number: 12031060
    Abstract: A clear homogenous, efficient, MEKO-free anti-skinning composition, for use in alkyd-based coating materials containing metal carboxylate driers, contains a mixture of cyclohexanone oxime and/or a petroleum distillate soluble zinc carboxylate dissolved in methyl propyl ketoxmine.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: July 9, 2024
    Assignee: PATCHAM USA LLC
    Inventors: Stephen Edward Cavender, Bhavesh Patel, Nishith Patel