Patents by Inventor Yat M. Chan

Yat M. Chan 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: 5369806
    Abstract: A glove for the protection of the hand of a welder from heat and burning during welding operations, includes a leather outer shell having a thickness in the range of about 0.8 to about 1.9 millimeters. The glove, within the outer shell, further includes an open-cell compressible flame retardant intermediate foam-like layer having a thickness in the range of about 2.3 to about 4.5 millimeters, a density in the range of about 1.5 to about 25 kilograms per cubic meter, and a porosity and compressibility in the range of about 25 to about 75 percent. The innermost layer of the glove, opposing the hand of the user, constitutes a felt-like cotton layer having a multiplicity of convection passages, said layer having a thread strand density characteristic in the range of about 5 to about 30 strands per lineal inch, a thickness in the range of about 1 to about 3 millimeters, and a density in the range of about 100 to about 200 kilograms per cubic meter.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: December 6, 1994
    Inventor: Yat M. Chan
  • Patent number: D373672
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: September 17, 1996
    Inventor: Yat M. Chan