Patents by Inventor Don J. Durzan

Don J. Durzan 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).

  • Cyclodextrins in plant nutrient formulations
    Patent number: 6087176
    Abstract: The present invention provides new plant nutrient formulations comprising cyclodextrins. The formulations are useful, for instance, in increasing growth, cellular development and secondary metabolite production of plant tissue cultures.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: July 11, 2000
    Assignee: The Regents of the University of California
    Inventors: Don J. Durzan, Frank F. Ventimiglia
  • Recovery of taxanes from plant material
    Patent number: 5981777
    Abstract: The present invention provides new methods isolating taxanes and other metabolites from taxane-producing plant materials.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: November 9, 1999
    Assignee: The Regents of the University of California
    Inventors: Don J. Durzan, Frank F. Ventimiglia
  • Recovery of Taxanes from conifers
    Patent number: 5955621
    Abstract: The present invention provides new sources of taxanes and other metabolites from members of the order Coniferales that are not in the genus Taxus.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: September 21, 1999
    Assignee: The Regents of the University of California
    Inventors: Don J. Durzan, Frank Ventimiglia
  • Simplified hybrid seed production by latent diploid parthenogenesis and parthenote cleavage
    Patent number: 5840567
    Abstract: A method for simplified hybrid seed production by latent diploid parthenogenesis and parthenote cleavage. Latent diploid parthenogenesis and subsequent parthenote cleavage is induced by controlled artificial conditions that activate latent apomictic behavior and result in a transition from sexual seed production to diploid asexual parthenogenesis. The method is useful for production of apomictic hybrid seeds.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: November 24, 1998
    Assignee: The Regents of the University of California
    Inventor: Don J. Durzan
  • Method for clonal propagation of gymnosperms by somatic polyembryogenesis
    Patent number: 5821126
    Abstract: A method for clonal propagation by somatic polyembryogenesis. The method allows for clonal propagation of embryonal suspensor mass resulting in true-to-type suspensor development of the conifer embryo leading to development of plantlets and plants.
    Type: Grant
    Filed: March 3, 1995
    Date of Patent: October 13, 1998
    Assignee: The Regents of the University of California
    Inventors: Don J. Durzan, Pramod K. Gupta
  • Recovery of taxanes from conifers
    Patent number: 5670663
    Abstract: The present invention provides new sources of taxanes and other metabolites from members of the order Coniferales that are not in the genus Taxus.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: September 23, 1997
    Assignee: Regents of the University of California
    Inventors: Don J. Durzan, Frank Ventimiglia
  • Taxane production in haploid-derived cell cultures
    Patent number: 5547866
    Abstract: The present invention provides haploid cells and their derivatives which are cultured in vitro to produce taxanes and other metabolites that evolve from the isoprenoid biosynthesis pathway.
    Type: Grant
    Filed: July 20, 1994
    Date of Patent: August 20, 1996
    Assignee: The Regents of the University of California
    Inventors: Don J. Durzan, Frank F. Ventimiglia