Patents by Inventor Pao Yu An

Pao Yu An 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).

  • Antistatic plastic materials containing epihalohydrin polymers
    Patent number: 6369159
    Abstract: Thermoplastic and thermoset materials containing an effective amount of an antistatic agent for improving antistatic properties thereof, the antistatic agent is selected from homopolymers and copolymers of an epihalohydrin.
    Type: Grant
    Filed: May 13, 1987
    Date of Patent: April 9, 2002
    Assignee: PDM Holdings Corp.
    Inventors: James Patrick Barnhouse, Simon Hsiao-Pao Yu
  • Bioadhesive polymer compositions
    Patent number: 6297337
    Abstract: Improved crosslinked ionic polymers or salts thereof having a soluble polymer fraction of less than about 15 wt %, and methods for making the same. The polymers are useful as bioadhesives, thickeners, emulsifiers, suspending aids, and pharmaceutical controlled release excipients.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: October 2, 2001
    Assignee: PMD Holdings Corp.
    Inventors: Nancy S. Marchant, Simon Hsaio-Pao Yu, Zahid Amjad
  • Baby walker
    Patent number: D439207
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: March 20, 2001
    Inventor: Pao-Yu Liu
  • Glove target for game
    Patent number: D352968
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: November 29, 1994
    Inventor: Chou-Pao Yu
  • Train station clock
    Patent number: D365765
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: January 2, 1996
    Inventor: Pao-Yu Liu
  • Baby cart
    Patent number: D377375
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: January 14, 1997
    Inventor: Pao-Yu Liu
  • Baby stool
    Patent number: D379407
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: May 27, 1997
    Inventor: Pao-Yu Liu
  • Baby cradle
    Patent number: D382412
    Type: Grant
    Filed: September 7, 1995
    Date of Patent: August 19, 1997
    Inventor: Pao-Yu Liu
  • Buggy rider
    Patent number: D397738
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: September 1, 1998
    Inventor: Pao-Yu Liu
  • Police cycle
    Patent number: D397739
    Type: Grant
    Filed: March 25, 1997
    Date of Patent: September 1, 1998
    Inventor: Pao-Yu Liu
  • Baby bicycle
    Patent number: D402596
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: December 15, 1998
    Inventor: Pao-Yu Liu