Patents by Inventor Tung-Hua Su

Tung-Hua Su 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).

  • Chassis for a chair seat
    Patent number: 6131998
    Abstract: A chassis is provided for a chair having a backrest and a chair seat. The chassis includes a swivel seat mounted to an underside of the chair seat, a first connecting seat, and a second connecting seat. The first connecting seat includes a mediate portion pivotally connected to a mediate portion of the swivel seat. The second connecting seat includes a first end having an upper portion pivotally connected to an end of the first connecting seat and a lower portion pivotally connected to an end of the swivel seat. The second connecting seat further includes a second end securely connected to the backrest to move therewith. When the backrest is moved rearward, the chair seat swivels through an angular displacement smaller than that of the backrest.
    Type: Grant
    Filed: November 22, 1999
    Date of Patent: October 17, 2000
    Inventor: Tung-Hua Su
  • Armrest
    Patent number: D439082
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: March 20, 2001
    Inventor: Tung-Hua Su
  • Armrest
    Patent number: D442401
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: May 22, 2001
    Inventor: Tung-Hua Su
  • Chair
    Patent number: D444955
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: July 17, 2001
    Inventor: Tung-Hua Su
  • Chair base
    Patent number: D445282
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: July 24, 2001
    Inventor: Tung-Hua Su
  • Chair
    Patent number: D445581
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: July 31, 2001
    Inventor: Tung-Hua Su
  • Armrest
    Patent number: D446062
    Type: Grant
    Filed: October 6, 2000
    Date of Patent: August 7, 2001
    Inventor: Tung-Hua Su
  • Seat support of a chair
    Patent number: D377283
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: January 14, 1997
    Assignee: Jorng Well Industrial Co., Ltd.
    Inventor: Tung-Hua Su
  • Arm
    Patent number: D425340
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: May 23, 2000
    Assignee: Jorng Well Industrial Co., Ltd.
    Inventor: Tung-Hua Su
  • Armrest
    Patent number: D426408
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: June 13, 2000
    Assignee: Jorng Well Industrial Co., Ltd.
    Inventor: Tung-Hua Su
  • Handle
    Patent number: D426762
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: June 20, 2000
    Assignee: Jorng Well Industrial Co., Ltd.
    Inventor: Tung-Hua Su