Patents by Inventor Jin Ling

Jin Ling 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).

  • Microencapsulated compositions
    Patent number: 6133197
    Abstract: Polyurea microcapsules particularly suitable for foliar application are prepared by an interfacial polymerization process in which the polyurea is formed from an aromatic diisocyanate and optionally an aromatic polyisocyanate having 3 or more isocyanate groups, in a weight ratio (when both types of isocyanate are present) of polyisocyanate:diisocyanate of from about 1:100 to about 1:1.5, and in which the microcapsules are produced having an average particle size of from about 1 to about 5 microns.As compared to conventional liquid (e.g., emulsifiable concentrate) compositions of pesticides, the microcapsules can provide safer handling and higher loading of active ingredients, while providing substantially equivalent biological activity to the liquid compositions.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: October 17, 2000
    Assignee: ZENECA Limited
    Inventors: Jin-Ling Chen, Marius Rodson, Herbert B. Scher, Kuo-Shin Lee, deceased
  • Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant
    Patent number: 6077522
    Abstract: Microcapsules containing a biologically active material which is sensitive to ultraviolet light are prepared which contain an ultraviolet light protectant selected from titanium dioxide, zinc oxide and mixtures thereof, suspended and thoroughly dispersed in a liquid.
    Type: Grant
    Filed: July 23, 1998
    Date of Patent: June 20, 2000
    Assignee: Zeneca Limited
    Inventors: Herbert B. Scher, Jin Ling Chen
  • Microcapsules containing suspensions of biologically active compounds
    Patent number: 6015571
    Abstract: Microcapsules containing a suspension of a soild, biologically active compound in an organic, water-immiscible liquid and processes for their preparation.
    Type: Grant
    Filed: December 12, 1994
    Date of Patent: January 18, 2000
    Assignee: Zeneca Limited
    Inventors: Herbert B. Scher, Jin Ling Chen
  • Microcapsules containing suspensions of biologically active compounds
    Patent number: 5993842
    Abstract: Microcapsules containing a suspension of a solid, biologically active compound in an organic, water-immiscible liquid and processes for their preparation.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: November 30, 1999
    Assignee: Zeneca Limited
    Inventors: Herbert B. Scher, Jin Ling Chen
  • Microcapsules containing suspensions of biologically active compounds and ultraviolet protectant
    Patent number: 5846554
    Abstract: Microcapsules containing a biologically active material which is sensitive to ultraviolet light are prepared which contain an ultraviolet light protectant selected from titanium dioxide, zinc oxide and mixtures thereof, suspended and thoroughly dispersed in a liquid.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: December 8, 1998
    Assignee: Zeneca Limited
    Inventors: Herbert B. Scher, Jin Ling Chen