Patents by Inventor Wenpin Ho

Wenpin Ho 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).

  • Acid copper electroplating solutions
    Publication number: 20040187731
    Abstract: Improved acid copper electroplating bath compositions are disclosed. The improved bath solutions contain at least one of a carrier; a water-soluble, mercapto-containing organic brightener; and a leveler which comprises an organic compound containing single or multiply charged centers in acidic bath solution. These electroplating bath compositions are used to copper plate advanced interconnects on semiconductor devices.
    Type: Application
    Filed: April 14, 2004
    Publication date: September 30, 2004
    Inventors: Qing Min Wang, Weiji Huang, Miu Ling Lau, Carol Hsiuchin Liu, Ce Ma, Edward K. Chang, Wenpin Ho, Richard C. Paciej
  • Process for the purification of nitric oxide
    Patent number: 6576044
    Abstract: A gas mixture comprised of nitric oxide and one or more impurities selected from nitrous oxide, nitrogen dioxide, nitrous acid, sulfur dioxide, carbonyl sulfide, water vapor and carbon dioxide is purified by pressure swing adsorption or temperature swing adsorption using a porous, metal-free polymer adsorbent that does not promote the disproportionation of nitric oxide to nitrogen dioxide and nitrogen or nitrous oxide. The adsorption step is preferably carried out at tempereatures in the range of about −120 to about 0° C.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: June 10, 2003
    Assignee: The BOC Group, Inc.
    Inventors: Dustin Wenpin Ho, Deming Tang, Walter H. Whitlock