Patents by Inventor Penelope Yao

Penelope Yao 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).

  • Carbon monoxide detector
    Patent number: D390797
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: February 17, 1998
    Assignee: Coleman Safety and Security Products, Inc.
    Inventors: Penelope Yao, David K. Stearns, Patrick McEvoy
  • Garage door opener housing
    Patent number: D402300
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: December 8, 1998
    Inventors: Loren E. Doppelt, Joseph Ergun, Marvin Wayne Olds, Penelope Yao