Patents by Inventor Bifen Xu

Bifen 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).

  • Pollution control catalyst with mutual protective distributed-active-combinations each including noble-metal-atoms stably structured and protected therein
    Patent number: 5559073
    Abstract: An exhaust gas catalyst for reducing the pollutant release containing in the exhaust gas. The catalyst includes a primary-core support. The catalyst also includes a distributed-catalytically-active multi-combination catalyst structure formed on the primary core support. The multi-combination catalyst structure includes an outermost gas-contact combination which includes atoms of metals selected from platinum group atomically immersed in the micro-space between a plurality of crystalline structures of composite oxides of a plurality of catalytically active metals and intimately attached to and protected by the crystalline structures in a protective inner combination.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: September 24, 1996
    Assignee: Beijing Huaxia Environmental Protection Company
    Inventors: Yimin Hu, Bifen Xu