Patents by Inventor Cheng-Hui Hsu

Cheng-Hui Hsu 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).

  • Patent number: 5897708
    Abstract: This invention, an apparatus for forming a two-sided fiberglass tape measure with two differently colored nylon resin coatings is characterized in that both sides of a glass fiber tape measure are coated simultaneously on both sides in a single forming step with differently colored resins.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: April 27, 1999
    Inventor: Cheng-Hui Hsu
  • Patent number: 5895539
    Abstract: Method of making a two-sided fiberglass tape measure with two differently colored nylon resin coatings characterized particularly in that a device is used that can coat simultaneously both sides of a fiberglass tape, both top and bottom, in a single forming step, yet producing two different colorations.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: April 20, 1999
    Inventor: Cheng-Hui Hsu
  • Patent number: 5531395
    Abstract: A stopping device for tape measures, consisting of a lower housing, a locking button, a spring, a tape roller and an upper housing, arranged in such a way that when the locking button is pushed upwards, the lower part of the stopping spring is released from the outer stopping rim of the tape roller which allows the tape to be retracted automatically using the tension of the helical spring of the tape roller, and releasing the locking button allows the tension of the helical spring to return to its initial position, thereby pressing against the outer stopping rim on one side of the tape roller and providing the mechanism for stopping it.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: July 2, 1996
    Assignee: Pro-Techtor International
    Inventor: Cheng-Hui Hsu
  • Patent number: D379771
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: June 10, 1997
    Inventor: Cheng-Hui Hsu
  • Patent number: D402525
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: December 15, 1998
    Inventor: Cheng-Hui Hsu
  • Patent number: D415047
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: October 12, 1999
    Inventor: Cheng-Hui Hsu
  • Patent number: D415971
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: November 2, 1999
    Inventor: Cheng-Hui Hsu
  • Patent number: D418435
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: January 4, 2000
    Inventor: Cheng-Hui Hsu
  • Patent number: D419850
    Type: Grant
    Filed: May 11, 1999
    Date of Patent: February 1, 2000
    Inventor: Cheng-Hui Hsu
  • Patent number: D420606
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: February 15, 2000
    Inventor: Cheng-Hui Hsu