Patents by Inventor Yong Zhu

Yong Zhu 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).

  • Protease enzymes for tough cleaning and/or spot and film reduction and compositions incorporating same
    Patent number: 6369011
    Abstract: The present relates to cleaning compositions comprising a protease enzyme which is a carbonyl variant having an amino acid sequence not found in nature, which is derived by replacement of a plurality of amino acid residues of a precursor carbonyl ydrolase with different amino acids.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: April 9, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Saroj Rai, Paul Elliott Correa, Yong Zhu, Thomas Paul Graycar, Richard Ray Bott
  • Cleaning composition
    Publication number: 20020039982
    Abstract: A hard surface cleaning composition for removing cooked-, baked- or burnt-on soils from cookware and tableware, the composition comprising an organoamine solvent and wherein the composition has a liquid surface tension of less than about 24.5 mN/m and a pH, as measured in a 10% solution in distilled water, or least than 10.5. The composition can be used as pre-treatment prior to the dishwashing process. The composition provides excellent removal of polymerized grease from metal and glass substrates.
    Type: Application
    Filed: July 19, 2001
    Publication date: April 4, 2002
    Applicant: The Procter & Gamble Company
    Inventors: Peter Robert Foley, Howard David Hutton, Carl-Eric Kaiser, Yong Zhu, Lucio Pieroni, Brian Xiaqing Song
  • Cleaning composition
    Publication number: 20020037822
    Abstract: A hard surface cleaning composition for removing cooked-, baked- or burnt-on soils from cookware and tableware, the composition comprising a soil swelling agent and a spreading auxiliary and wherein the composition has a liquid surface tension of less than about 24.5 mN/m and a pH as measured in a 10% solution in distilled water of at least 10.5. The composition can be used as pre-treatment prior to the dishwashing process. The composition provides excellent removal of polymerized grease from metal and glass substrates.
    Type: Application
    Filed: July 19, 2001
    Publication date: March 28, 2002
    Inventors: Peter Robert Foley, Howard David Hutton, Carl-Eric Kaiser, Yong Zhu, Lucio Pieroni, Brian Xiaqing Song
  • Cerium doped barium titanate single crystal, the process therefor and photorefractive device thereby
    Patent number: 5541764
    Abstract: The present invention relates to a doped barium titanate single crystal containing barium titanate as substrate and 5-250 ppm Ce, the process therefor and photorefractive devices made from the cerium doped barium titanate single crystal.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: July 30, 1996
    Assignee: Chinese Academy of Sciences Institute of Physics
    Inventors: Yong Zhu, Mengjun Hui, Xing Wu, Changxi Yang, Changqing Wang, Hongbin Liu, Xiaojuan Niu, Yingping Chen, Jinfeng Zhang, Tang Zhou