Patents by Inventor Sonja Schiefer

Sonja Schiefer 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).

  • Telephone handset
    Patent number: D342261
    Type: Grant
    Filed: September 3, 1992
    Date of Patent: December 14, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Anthony J. Grewe, Daniel K. Harden, Sonja Schiefer, Steven J. Shiozaki, David C. Stowers, Michael P. Zambelli
  • Combined 3D audio headset and glasses
    Patent number: D358150
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: May 9, 1995
    Assignee: Sonics Associates Incorporated
    Inventors: Charles R. Lewis, Jr., Dan Harden, Sonja Schiefer
  • 3-D audio headset
    Patent number: D358151
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: May 9, 1995
    Assignee: Sonics Associates Incorporated
    Inventors: Charles R. Lewis, Jr., Dan Harden, Sonja Schiefer
  • Toaster
    Patent number: D374370
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: October 8, 1996
    Assignee: Sunbeam Products, Inc.
    Inventors: Matt Barthelemy, Sonja Schiefer
  • Toaster
    Patent number: D377578
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: January 28, 1997
    Assignee: Sunbeam Products, Inc.
    Inventors: Matt Barthelemy, Sonja Schiefer
  • Toaster with window
    Patent number: D379899
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: June 17, 1997
    Assignee: Sunbeam Products, Inc.
    Inventors: Matt Barthelemy, Sonja Schiefer
  • Electronic display device
    Patent number: D388410
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: December 30, 1997
    Assignee: Shinho Electronics & Communications Co., Ltd.
    Inventors: Ian James Myles, Sonja Schiefer
  • Electronic display device
    Patent number: D388412
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: December 30, 1997
    Assignee: Shinho Electronics & Communications Co., Ltd.
    Inventors: Ian James Myles, Sonja Schiefer
  • Portable telephone
    Patent number: D388783
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: January 6, 1998
    Assignee: Motorola, Inc.
    Inventors: Daniel Harden, Sonja Schiefer, Jeffery F. Kurgan, Kevin P. Mitchell
  • Toaster window
    Patent number: D391805
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: March 10, 1998
    Inventors: Matt Barthelemy, Sonja Schiefer
  • Computer monitor
    Patent number: D404380
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: January 19, 1999
    Assignee: Princeton Graphic Systems, Inc.
    Inventors: Ray Ho, Charlie Pai, Paul Wang, Frank Kao, Darwin Chang, Sonja Schiefer, Daniel Harden
  • Toaster
    Patent number: D404605
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: January 26, 1999
    Assignee: Sunbeam Products, Inc.
    Inventors: Matt Barthelemy, Sonja Schiefer
  • Notebook computer housing
    Patent number: D416003
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: November 2, 1999
    Assignee: Vadem
    Inventors: Sonja Schiefer, Joshua Morenstein, Jenny Schlee, Richard Huang, Edmond Ku