Patents by Inventor Michael D. Crouch

Michael D. Crouch 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).

  • Method for controlled reduction in temperature and preservation of embryos in a cryogenic state
    Patent number: 4537034
    Abstract: An apparatus for reducing the temperature of articles to the cryogenic state in reducing the temperature of embryos at a controlled and predetermined rate is disclosed comprised of a housing defining an insulated cooling chamber employed in association with support means for removably suspending the embryos within a chamber. A gaseous medium, such as, air circulates along a closed path through the chamber so that the embryos are disposed in its path and a heat exchanger including a heat transfer medium is positioned in the flow path of the gaseous medium together with a temperature sensor so that the rate of cooling may be programmed and regulated automatically by correlation of the temperature sensor with the heat exchange medium.
    Type: Grant
    Filed: June 14, 1984
    Date of Patent: August 27, 1985
    Inventor: Michael D. Crouch
  • Apparatus for controlled reduction in temperature and preservation of embryos in a cryogenic state
    Patent number: 4459825
    Abstract: An apparatus for reducing the temperature of articles to the cryogenic state in reducing the temperature of embryos at a controlled and predetermined rate is disclosed comprised of a housing defining an insulated cooling chamber employed in association with support means for removably suspending the embryos within a chamber. A gaseous medium, such as, air circulates along a closed path through the chamber so that the embryos are disposed in its path and a heat exchanger including a heat transfer medium is positioned in the flow path of the gaseous medium together with a temperature sensor so that the rate of cooling may be programmed and regulated automatically by correlation of the temperature sensor with the heat exchange medium.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: July 17, 1984
    Inventor: Michael D. Crouch