Patents by Inventor Zhiqiang Xu

Zhiqiang Xu 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: 7220693
    Abstract: Acidic groups such as those in the sulfonic acid family have been successfully linked onto the surface of carbon used as catalyst support. Electrodes made using such sulfonated catalysts as used in electrochemical cells improve the performance of the cells, more so than cells fabricated from electrodes using an unsulfonated electrode.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: May 22, 2007
    Assignee: H Power Corporation
    Inventors: Zhigang Qi, Zhiqiang Xu, Arthur Kaufman
  • Patent number: 7213327
    Abstract: A method for fabricating the embedded thin film resistors of a printed circuit board is provided. The embedded thin film resistors are formed using a resistor layer built in the printed circuit board. Compared with conventional discrete resistors, embedded thin film resistors contribute to a smaller printed circuit board as the space for installing conventional resistors is saved, and better signal transmission speed and quality as the capacitive reactance effect caused by two connectors of the conventional resistors is avoided. The method for fabricating the embedded thin film resistors provided by the invention can be conducted using the process and equipment for conventional printed circuit boards and thereby saving the investment on new types of equipment. The method can be applied in the mass production of printed circuit boards and thereby reduce the manufacturing cost significantly.
    Type: Grant
    Filed: August 7, 2004
    Date of Patent: May 8, 2007
    Inventors: Sung-Ling Su, Zhiqiang Xu
  • Patent number: 7108930
    Abstract: In one aspect, the invention features a method including sorbing carbon monoxide to a catalyst layer of a fuel cell, and oxidizing the carbon monoxide. The method can be used to pre-condition or activate the catalyst layer.
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: September 19, 2006
    Assignee: Plug Power, Inc.
    Inventors: Zhiqiang Xu, Zhigang Qi, Arthur Kaufman
  • Publication number: 20060068295
    Abstract: Organic lithium salts suitable for use in electrolytes for primary or secondary rechargeable batteries include de-localized bulky anions over Lewis acid fragments, typically BF3, and organic moieties. The organic moieties may be, for example, anions derived from fused nitrogen heterocycles (e.g. benzeneimidate, benzitriazolate and the like); multi carboxylates (e.g. oxalate, 1,2,4,5-benzenetetracarboxylate and the like), and pyromellitic diimidate. The organic lithium salts of the invention have the general formula: Liq[Org(MXn)m], in which Org represents the organic moieties and MXn represents an organic or inorganic boron, aluminum or phosphorous containing Lewis acid.
    Type: Application
    Filed: September 29, 2004
    Publication date: March 30, 2006
    Applicant: SKC Power Tech, Inc.
    Inventors: Zhiqiang Xu, Chi-Kyun Park, Zhiwei Zhang, Chai Chul
  • Publication number: 20050196966
    Abstract: A method for fabricating the embedded thin film resistors of a printed circuit board is provided. The embedded thin film resistors are formed using a resistor layer built in the printed circuit board. Compared with conventional discrete resistors, embedded thin film resistors contribute to a smaller printed circuit board as the space for installing conventional resistors is saved, and better signal transmission speed and quality as the capacitive reactance effect caused by two connectors of the conventional resistors is avoided. The method for fabricating the embedded thin film resistors provided by the invention can be conducted using the process and equipment for conventional printed circuit boards and thereby saving the investment on new types of equipment. The method can be applied in the mass production of printed circuit boards and thereby reduce the manufacturing cost significantly.
    Type: Application
    Filed: August 7, 2004
    Publication date: September 8, 2005
    Inventors: Sung-Ling Su, Zhiqiang Xu
  • Publication number: 20050136295
    Abstract: In one aspect, the invention features a method including sorbing carbon monoxide to a catalyst layer of a fuel cell, and oxidizing the carbon monoxide. The method can be used to pre-condition or activate the catalyst layer.
    Type: Application
    Filed: December 17, 2003
    Publication date: June 23, 2005
    Inventors: Zhiqiang Xu, Zhigang Qi, Arthur Kaufman
  • Publication number: 20050130018
    Abstract: Fuel cell diffusion layers, and related systems and methods are disclosed.
    Type: Application
    Filed: December 15, 2003
    Publication date: June 16, 2005
    Inventors: Zhiqiang Xu, Zhigang Qi, Arthur Kaufman
  • Publication number: 20050130027
    Abstract: Fuel cell catalyst layers, and related systems and methods are disclosed.
    Type: Application
    Filed: December 15, 2003
    Publication date: June 16, 2005
    Inventors: Zhiqiang Xu, Zhigang Qi, Arthur Kaufman
  • Publication number: 20050130017
    Abstract: Fuel cell plates, and related systems and methods are disclosed.
    Type: Application
    Filed: December 15, 2003
    Publication date: June 16, 2005
    Inventors: Zhiqiang Xu, Zhigang Qi, Arthur Kaufman