Patents by Inventor Kwo-Hrong Lai

Kwo-Hrong Lai 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).

  • Aqueous-based urethane coating compositions
    Patent number: 4657964
    Abstract: Aqueous urethanes having improved physical properties in addition to excellent flame retardant properties are obtained when a combination of a halogenated diol, such as an alkoxylated tetrabromobisphenol A, or dibromoneopentyl glycol and a second diol which contains either a carboxy group, a sulphonate group or a tertiary amine group is incorporated in the urethane.
    Type: Grant
    Filed: July 3, 1985
    Date of Patent: April 14, 1987
    Assignee: ICI Americas Inc.
    Inventors: Kwo-Hrong Lai, Milton Lapkin, Frank B. Swasey
  • Process for preparing polycarbonates
    Patent number: 4131731
    Abstract: A process for preparing linear polycarbonates containing terminal hydroxyl groups with the essential exclusion of other terminal groups by reacting glycols having a carbon number > 4 and cyclic esters of carbonic acid via ester interchange reaction at 100-300.degree. C and 0.1 - 300 mm Hg.
    Type: Grant
    Filed: January 9, 1978
    Date of Patent: December 26, 1978
    Assignee: Beatrice Foods Company
    Inventors: Kwo-Hrong Lai, Harold N. Silvers