Patents by Inventor John S. Yuen

John S. Yuen 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).

  • Combined transmitter and receiver for a door chime
    Patent number: D344036
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: February 8, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined adjustable flashlight and radio
    Patent number: D344358
    Type: Grant
    Filed: April 29, 1992
    Date of Patent: February 15, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Adjustable fluorescent lantern
    Patent number: D345810
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: April 5, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Solar rechargeable flashlight
    Patent number: D346236
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: April 19, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Night light
    Patent number: D348111
    Type: Grant
    Filed: April 1, 1992
    Date of Patent: June 21, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Solar rechargeable flashlight
    Patent number: D348740
    Type: Grant
    Filed: July 31, 1992
    Date of Patent: July 12, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Multi-purpose lantern
    Patent number: D348941
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: July 19, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined cordless emergency power failure fluorescent lantern and flashlight
    Patent number: D348942
    Type: Grant
    Filed: August 17, 1992
    Date of Patent: July 19, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Rechargeable emergency night light
    Patent number: D350407
    Type: Grant
    Filed: October 27, 1992
    Date of Patent: September 6, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined radio and light
    Patent number: D350752
    Type: Grant
    Filed: April 7, 1992
    Date of Patent: September 20, 1994
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Pencil sharpener
    Patent number: D354987
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: January 31, 1995
    Assignee: John Manufacturing Ltd.
    Inventor: John S. Yuen
  • Infra-red sensor light
    Patent number: D358108
    Type: Grant
    Filed: October 5, 1993
    Date of Patent: May 9, 1995
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined AM/FM radio and multi-purpose lantern
    Patent number: D368970
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: April 16, 1996
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined emergency alarm and flasher
    Patent number: D374190
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 1, 1996
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined plug-in fluorescent tube night light and photo sensor
    Patent number: D374294
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 1, 1996
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Bicycle light
    Patent number: D374944
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: October 22, 1996
    Assignee: John Manufacturing, Ltd.
    Inventor: John S. Yuen
  • Fluorescent lantern with twin spotlight
    Patent number: D376022
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: November 26, 1996
    Assignee: John Manufacturing Ltd.
    Inventor: John S. Yuen
  • Personal security alarm with twin light
    Patent number: D376216
    Type: Grant
    Filed: August 15, 1995
    Date of Patent: December 3, 1996
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Combined radio with flourescent lantern, spotlight and blinking light
    Patent number: D377173
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: January 7, 1997
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen
  • Battery operated pencil sharpener
    Patent number: D377666
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: January 28, 1997
    Assignee: John Manufacturing Limited
    Inventor: John S. Yuen