Patents Examined by H.S. Cockerman
  • Polyurethane covered golf balls
    Patent number: 4442282
    Abstract: A novel thermoplastic polyesterurethane for golf ball covers comprises the reaction product of a 1,12-dodecanedioc acid polyester having a molecular weight from about 1500 to 5000 reacted with diphenylmethane-4,4'-diisocyanate, and which is readily molded around a golf ball core to provide excellent golf balls.
    Type: Grant
    Filed: June 20, 1983
    Date of Patent: April 10, 1984
    Assignee: The B. F. Goodrich Company
    Inventor: Edmond G. Kolycheck
  • Method of preparing non-friable rigid polyurethane foam
    Patent number: 3975317
    Abstract: The friability of rigid polyurethane foams prepared using a chlorine- or bromine-containing polyol is significantly reduced or eliminated by the use of a dimethyltin-S,S'-bis(alkylmercaptocarboxylate) as the polymerization catalyst.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: August 17, 1976
    Assignee: M & T Chemicals Inc.
    Inventor: Robert V. Russo