Patents by Inventor Zhi-Weng Chang

Zhi-Weng Chang 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: 6495106
    Abstract: Disclosed is an automated staining apparatus including an arm (30) moveable in three dimensions, and a hollow tip head (70) located on the arm including integral reagent tip head (40), wash tip (41) and blow tip (42) for selectively dispensing gas and liquid onto microscope slides. Also disclosed are various sub-components of the apparatus that are specifically adapted to the processing of specimens on slides.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: December 17, 2002
    Assignee: BioGenex Laboratories
    Inventors: Krishan L. Kalra, Jason Z. Zhang, Zhi-Weng Chang, Jianghong Shui
  • Patent number: 5948359
    Abstract: Disclosed is an automated staining apparatus including an arm moveable in three dimensions, and a hollow tip head located on the arm including integral reagent tip head, wash tip and blow tip for selectively dispensing gas and liquid onto microscope slides. Also disclosed are various sub-components of the apparatus that are specifically adapted to the processing of specimens on slides.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: September 7, 1999
    Assignee: BioGenex Laboratories
    Inventors: Krishan L. Kalra, Jason Z. Zhang, Zhi-Weng Chang, Jianghong Shui