Patents by Inventor John Y. J. Yan

John Y. J. Yan 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).

  • Method of making textured surface prosthesis implants
    Patent number: 5022942
    Abstract: A surgical prosthesis is disclosed having a textured exterior surface formed of non-absorbent material substantially free of pores and interstices. The invented device is usable for mammary and other implants. Various methods of manufacturing the device are also disclosed.
    Type: Grant
    Filed: June 5, 1989
    Date of Patent: June 11, 1991
    Assignee: Mentor Corporation
    Inventors: John Y. J. Yan, Bobby K. Purkait
  • Textured surface frosthesis implants
    Patent number: 4960425
    Abstract: A surgical prosthesis is disclosed having a textured exterior surface formed of non-absorbent material substantially free of pores and interstices. The invented device is usable for mammary and other implants. Various methods of manufacturing the device are also disclosed.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: October 2, 1990
    Assignee: Mentor Corporation
    Inventors: John Y. J. Yan, Bobby K. Purkait