Patents by Inventor Yong-jin Xu

Yong-jin 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).

  • Chemical structure identification
    Publication number: 20040225456
    Abstract: A method for generating a numeric or alpha-numeric identifier representative of a chemical structure having at least two atoms connected by a bond includes the step of assigning a numerical value to each atom and a numerical bond value to each bond. The method updates the numerical values for each atom based on the current values assigned to each atom and the numerical bond value. After the numerical values for each atom have been updated, the method calculates a numeric or alpha-numeric identifier for the chemical structure.
    Type: Application
    Filed: June 2, 2004
    Publication date: November 11, 2004
    Inventors: Mark A. Johnson, Yong-Jin Xu
  • Chemical structure identification
    Patent number: 6757618
    Abstract: A method for generating a numeric or alpha-numeric identifier representative of a chemical structure having at least two atoms connected by a bond includes the step of assigning a numerical value to each atom and a numerical bond value to each bond. The method updates the numerical values for each atom based on the current values assigned to each atom and the numerical bond value. After the numerical values for each atom have been updated the method calculates a numeric or alpha-numeric identifier for the chemical structure.
    Type: Grant
    Filed: May 9, 2001
    Date of Patent: June 29, 2004
    Assignee: Pharmacia & Upjohn Company
    Inventors: Mark A. Johnson, Yong-jin Xu
  • Chemical structure identification
    Publication number: 20020022933
    Abstract: A method for generating a numeric or alpha-numeric identifier representative of a chemical structure having at least two atoms connected by a bond includes the step of assigning a numerical value to each atom and a numerical bond value to each bond. The method updates the numerical values for each atom based on the current values assigned to each atom and the numerical bond value. After the numerical values for each atom have been updated the method calculates a numeric or alpha-numeric identifier for the chemical structure.
    Type: Application
    Filed: May 9, 2001
    Publication date: February 21, 2002
    Inventors: Mark A. Johnson, Yong-Jin Xu