Patents by Inventor Richard D. Danielson

Richard D. Danielson 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).

  • Thermal transfer bag
    Patent number: 4997032
    Abstract: A thermal transfer means comprising a flexible bag or pouch filled with a chemically inert, electrically nonconductive, nonflammable, essentially gas-free, thermally stable, thermally conductive, body of liquid comprising fluorochemical liquid. Said bag is fabricated from a flexible, durable plastic film that has low permeability to air and the fluorochemical liquid. The configuration of the bag is conformable to adapt to the geometry of the space, formed between the surface of a heat generating component or components and the surface of a heat sink, into which the bag is inserted, thereby contacting said surfaces and providing a thermal conduction path for heat generated by the heat generating component during operation from said component to the heat sink. The liquid has a boiling point such that it down not boil at the highest operating temperature of the device. Also provided is a method for making and filling the bag such that after sealing the bag is substantially gas free.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: March 5, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard D. Danielson, David A. Hesselroth, Ralph J. Stein, Jr.
  • Detection of articles
    Patent number: 4469623
    Abstract: Vapor permeable microcapsules filled with volatile perfluoroalkyl bromide and used to tag articles for the detection thereof.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: September 4, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard D. Danielson, Robert A. Prokop
  • Tagging with microcapsules containing perfluoroalkyl pentafluorosulfide
    Patent number: 4399226
    Abstract: Vapor permeable microcapsules filled with volatile perfluoroalkyl pentafluorosulfide and used to tag articles for the detection thereof.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: August 16, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard D. Danielson, Robert A. Prokop
  • Microcapsules containing perfluoroalkyl pentafluorosulfide
    Patent number: 4306993
    Abstract: Vapor permeable microcapsules filled with volatile perfluoroalkyl pentafluorosulfide and used to tag articles for the detection thereof.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: December 22, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard D. Danielson, Robert A. Prokop