Patents by Inventor Boh Tsai

Boh Tsai 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).

  • Polymeric structure having improved barrier properties and method of making same
    Patent number: 4816342
    Abstract: A polymeric structure having an oxygen barrier layer (e.g., ethylene-vinyl alcohol copolymer) is heated in the presence of moisture to improve its resistance to oxygen and moisture penetration. A drying agent is incorporated in the multi-layer structure to control the rate of water penetration to, and the amount of water in, the barrier layer.
    Type: Grant
    Filed: December 11, 1986
    Date of Patent: March 28, 1989
    Assignee: American National Can Company
    Inventors: Christopher J. Farrell, Boh Tsai, James A. Wachtel
  • Polymeric structure having improved barrier properties and method of making same
    Patent number: 4770944
    Abstract: A polymeric structure having an oxygen barrier layer (e.g., ethylene-vinyl alcohol copolymer) is heated in the presence of moisture to improve its resistance to oxygen and moisture penetration. A drying agent is incorporated in the multi-layer structure to control the rate of water penetration to, and the amount of water in, the barrier layer.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: September 13, 1988
    Assignee: American Can Company
    Inventors: Christopher J. Farrell, Boh Tsai, James A. Wachtel
  • Glasses
    Patent number: D368923
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 16, 1996
    Inventor: Boh Tsai