Patents by Inventor Yin-Fu Chang

Yin-Fu Chang 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: 10557141
    Abstract: The present invention relates to an improved method of producing a transgenic plant. Said method comprises, inter alia, the steps of a) providing a wounded transformable explant comprising a hypocotyl or a portion thereof, at least one cotyledon and wounded tissue, b) transforming cells comprised by said explant, and c) transferring said explant to a growing medium, comprising at least one selection compound for a selectable marker, by inserting the hypocotyl of said explant into said growing medium. Moreover, the present invention relates to a plant obtainable by the method according to the present invention.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: February 11, 2020
    Assignee: BASF PLANT SCIENCE COMPANY GMBH
    Inventors: Yin-Fu Chang, Aparna Sri Vanguri, Leslie Grist, Holly Tuttle, Hai Ping Hong, Paula Olhoft
  • Publication number: 20140237688
    Abstract: The present invention relates to an improved method of producing a transgenic plant. Said method comprises, inter alia, the steps of a) providing a wounded transformable explant comprising a hypocotyl or a portion thereof, at least one cotyledon and wounded tissue, b) transforming cells comprised by said explant, and c) transferring said explant to a growing medium, comprising at least one selection compound for a selectable marker, by inserting the hypocotyl of said explant into said growing medium. Moreover, the present invention relates to a plant obtainable by the method according to the present invention.
    Type: Application
    Filed: July 20, 2012
    Publication date: August 21, 2014
    Inventors: Yin-Fu Chang, Aparna Sri Vanguri, Leslie Grist, Holly Tuttle, Hai Ping Hong, Paula Olhoft
  • Patent number: 6858777
    Abstract: Multiple shoot structures are induced from plant tissues (e.g., shoot apices or axillary buds on an artificial medium) to produce multiple shoot cultures. These multi-shoot cultures are then transformed by known transformation methods. Plants are subsequently regenerated from the transformed cells. Crops that may be efficiently transformed by this method include plants normally recalcitrant to transformation such as sugar beet, sunflower, soybean, cotton, tobacco, tomato, peanuts, melons, watermelon, squash, Brassica, and pepper.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: February 22, 2005
    Assignee: Syngenta Participations AG
    Inventors: Heng Zhong, Eric Boudreau, Sabrina Rouse, Erik Dunder, Weining Gu, Yin-Fu Chang
  • Publication number: 20020073445
    Abstract: Multiple shoot structures are induced from plant tissues (e.g., shoot apices or axillary buds on an artificial medium) to produce multiple shoot cultures. These multi-shoot cultures are then transformed by known transformation methods. Plants are subsequently regenerated from the transformed cells. Crops that may be efficiently transformed by this method include plants normally recalcitrant to transformation such as sugar beet, sunflower, soybean, cotton, tobacco, tomato, peanuts, melons, watermelon, squash, Brassica, and pepper.
    Type: Application
    Filed: August 13, 2001
    Publication date: June 13, 2002
    Inventors: Heng Zhong, Eric Boudreau, Sabrina Rouse, Erik Dunder, Weining Gu, Yin-Fu Chang
  • Patent number: 5955362
    Abstract: The present invention is drawn to the production of fertile transformed wheat plants. The method involved subjecting wheat tissues to high velocity microprojectile bombardment, selecting for transformed cells, and regenerating stably transformed fertile plants from the transformed cells.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: September 21, 1999
    Assignee: Novartis Finance Corporation
    Inventors: Yin-Fu Chang, James Richard Wong, Andrea Itano, Stephen J. Mejza, Leslie Walker
  • Patent number: 5824302
    Abstract: According to the invention there is provided a method of controlling insect larvae comprising the steps of feeding said larvae an insecticidal amount of a transgenic Zea mays plant that expresses a polypeptide having the insect toxicity properties of Bacillus thuringiensis crystal protein.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: October 20, 1998
    Assignee: Novartis Finance Corporation
    Inventors: Gleta Carswell, Christian Harms, Yin-Fu Chang, Mary-Dell Chilton
  • Patent number: 5770450
    Abstract: Methods of regenerating fertile Zea mays plants from protoplasts or protoplast-derived cells are described. The protoplasts or cells may be derived from embryogenic cell cultures or callus cultures. The protoplasts, cells and resulting plants may be transgenic, containing, for example, chimeric genes coding for a polypeptide having substantially the insect toxicity properties of the crystal protein produced by Bacillus thuringiensis.
    Type: Grant
    Filed: July 1, 1994
    Date of Patent: June 23, 1998
    Assignee: Novartis Finance Corporation
    Inventors: Ray Shillito, Gleta Carswell, Christian Harms, Yin-Fu Chang
  • Patent number: 5766900
    Abstract: Methods of regenerating fertile Zea mays plants from protoplasts or protoplast-derived cells are described. The protoplasts or cells may be derived from embryogenic cell cultures or callus cultures. The protoplasts, cells and resulting plants may be transgenic, containing, for example, chimeric genes coding for a polypeptide having substantially the insect toxicity properties of the crystal protein produced by Bacillus thuringiensis.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: June 16, 1998
    Assignee: Novartis Corporation
    Inventors: Ray Shillito, Gleta Carswell, Christian Harms, Yin-Fu Chang
  • Patent number: 5610042
    Abstract: The present invention is drawn to the production of fertile transformed wheat plants. The method involved subjecting wheat tissues to high velocity microprojectile bombardment, selecting for transformed cells, and regenerating stably transformed fertile plants from the transformed cells.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: March 11, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Yin-Fu Chang, James R. Wong, Andrea Itano, Stephen J. Mejza, Leslie Walker
  • Patent number: 5595733
    Abstract: According to the invention there is provided a method of controlling insect larvae comprising the steps of feeding said larvae an insecticidal amount of a transgenic Zea mays plant that expresses a polypeptide having the insect toxicity properties of Bacillus thuringiensis crystal protein.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: January 21, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Gleta Carswell, Christian Harms, Yin-Fu Chang, Mary-Dell Chilton
  • Patent number: 5350689
    Abstract: Methods of regenerating fertile Zea mays plants from protoplasts or protoplast-derived cells are described. The protoplasts or cells may be derived from embryogenic cell cultures or callus cultures. The protoplasts, cells and resulting plants may be transgenic, containing, for example, chimeric genes coding for a polypeptide having substantially the insect toxicity properties of the crystal protein produced by Bacillus thuringiensis.
    Type: Grant
    Filed: March 1, 1993
    Date of Patent: September 27, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Ray Shillito, Gleta Carswell, Christian Harms, Cindy Boyce, Yin-Fu Chang