Patents by Inventor David J. Granlund

David J. Granlund 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).

  • Device and method for controlled freezing of cell cultures
    Patent number: 4455842
    Abstract: An enclosed device and method for controlled freezing of cell cultures, especially eucaryotic cell cultures, contained in cell culture vials by means of a conventional freezer includes a container and top, a supporting grid and supporting grid base within the container for supporting the culture vials and a compatible liquid refrigerant in a volume of at least fifteen times the culture volume and at a level to totally immerse all of the cultures to be frozen. Compatible liquid refrigerants include the straight chain aliphatic alcohols, preferrably ethanol and methanol.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: June 26, 1984
    Assignee: Biotech Research Laboratories, Inc.
    Inventor: David J. Granlund
  • Device and method for controlled freezing of cell cultures
    Patent number: 4377077
    Abstract: An enclosed device and method for controlled freezing of cell cultures, especially eucaryotic cell cultures, contained in cell culture vials by means of a conventional freezer includes a container and top, a supporting grid and supporting grid base within the container for supporting the cultire vials and a compatible liquid refrigerant in a volume of at least fifteen times the culture volume and at a level to totally immerse all of the cultures to be frozen. Compatible liquid refrigerants include the straight chain aliphatic alcohols, preferrably ethanol and methanol.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: March 22, 1983
    Assignee: Biotech Research Laboratories, Inc.
    Inventor: David J. Granlund