Patents Represented by Attorney Donald G. Leavitt
  • Patent number: 4873191
    Abstract: Genetic transformation of a zygote and the embryo and mature organism which result therefrom is obtained by placing or inserting exogenous genetic material into the nucleus of the zygote or into any genetic material which ultimately forms at least a part of the nucleus of the zygote. It is preferred that the exogenous genetic material be added to a pronuclei of the zygote and is particularly preferred that it be added to the male pronucleus of the zygote. Thereafter, the zygote is allowed to undergo differentiation and development into the organism. The genotype of the zygote and the organism which results therefrom will include the genotype of the exogenous genetic material and the exogenous genetic material will be phenotypically expressed.The invention can be utilized in a variety of ways including, for example, animal and plant breeding to modify or create new species, it can be used in epigenetics and in the understanding and treatment of genetic diseases.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: October 10, 1989
    Assignee: Ohio University
    Inventors: Thomas E. Wagner, Peter C. Hoppe
  • Patent number: 4284620
    Abstract: Novel x-ray contrast agents, i.e., N-(2-hydroxyethyl)-2,4,6-triiodo-3,5-bis-(2-keto-L-gulonamido)benzamide and intermediates.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: August 18, 1981
    Assignee: Mallinckrodt, Inc.
    Inventors: Youlin Lin, Kenneth R. Smith
  • Patent number: D246936
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: January 10, 1978
    Inventor: Philip L. Mitchell
  • Patent number: D247053
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: January 24, 1978
    Assignee: Genie Toys, Inc.
    Inventor: Thomas J. Dawson