Patents by Inventor Penelope C. Yao

Penelope C. 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).

  • Portable content display device
    Patent number: D483361
    Type: Grant
    Filed: April 4, 2000
    Date of Patent: December 9, 2003
    Assignee: Gemstar-TV Guide International, Inc.
    Inventors: Penelope C. Yao, Thomas E. Colson, Martin F. Eberhard, Fadhly A. Bey
  • Keyboard
    Patent number: D362432
    Type: Grant
    Filed: February 23, 1994
    Date of Patent: September 19, 1995
    Assignee: Microsoft Corporation
    Inventors: Mike M. Paull, Steven T. Kaneko, Thomas E. Davies, Jr., Jan Hippen, Penelope C. Yao
  • Solid ink stick for a color printer
    Patent number: D402308
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: December 8, 1998
    Assignee: Tektronix, Inc.
    Inventors: Penelope C. Yao, Henry Y. Chin, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D403351
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: December 29, 1998
    Assignee: Tektronix, Inc.
    Inventors: Penelope C. Yao, David L. Brown, Henry Y. Chin
  • Solid ink stick for a color printer
    Patent number: D403352
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: December 29, 1998
    Assignee: Tektronix, Inc.
    Inventors: David L. Brown, Henry Y. Chin, Penelope C. Yao
  • Solid ink stick for a color printer
    Patent number: D403699
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: January 5, 1999
    Assignee: Tektronix, Inc.
    Inventors: Henry Y. Chin, Fred T. Mattern, Penelope C. Yao, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D407109
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: March 23, 1999
    Assignee: Tektronix, Inc.
    Inventors: Penelope C. Yao, Henry Y. Chin, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D407110
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: March 23, 1999
    Assignee: Tektronix, Inc.
    Inventors: Penelope C. Yao, Henry Y. Chin, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D407111
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: March 23, 1999
    Assignee: Tektronix, Inc.
    Inventors: David L. Brown, Henry Y. Chin, Penelope C. Yao
  • Solid ink stick for a color printer
    Patent number: D407112
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: March 23, 1999
    Assignee: Textronix, Inc.
    Inventors: Henry Y. Chin, Penelope C. Yao, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D407742
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: April 6, 1999
    Assignee: Tektronix, Inc.
    Inventors: Penelope C. Yao, Henry Y. Chin, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D407743
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: April 6, 1999
    Assignee: Tektronix, Inc.
    Inventors: Penelope C. Yao, David L. Brown, Henry Y. Chin
  • Solid ink stick for a color printer
    Patent number: D407745
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: April 6, 1999
    Assignee: Tektronix, Inc.
    Inventors: David L. Brown, Penelope C. Yao, Henry Y. Chin
  • Solid ink stick for a color printer
    Patent number: D408849
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: April 27, 1999
    Assignee: Tektronix, Inc.
    Inventors: Henry Y. Chin, Penelope C. Yao, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D409235
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: May 4, 1999
    Assignee: Tektronix, Inc.
    Inventors: Henry Y. Chin, Penelope C. Yao, David L. Brown
  • Solid ink stick for a color printer
    Patent number: D410026
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: May 18, 1999
    Assignee: Tektronix, Inc.
    Inventors: David L. Brown, Penelope C. Yao, Henry Y. Chin
  • Solid ink stick for a color printer
    Patent number: D412527
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: August 3, 1999
    Assignee: Tektronix, Inc.
    Inventors: James A. Ellers, Penelope C. Yao
  • Solid ink stick for a color printer
    Patent number: D412528
    Type: Grant
    Filed: May 5, 1998
    Date of Patent: August 3, 1999
    Assignee: Tektronix, Inc.
    Inventors: James A. Ellers, Penelope C. Yao, Kuoyong Huang
  • Solid ink stick for a color printer
    Patent number: D413625
    Type: Grant
    Filed: January 6, 1998
    Date of Patent: September 7, 1999
    Assignee: Tektronix, Inc.
    Inventors: David L. Brown, Penelope C. Yao, Henry Y. Chin
  • Solid ink stick for a color printer
    Patent number: D416936
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: November 23, 1999
    Assignee: Tektronix, Inc.
    Inventors: Henry Y. Chin, Penelope C. Yao, David L. Brown