Patents by Inventor David Arnold Krohn

David Arnold Krohn 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).

  • Optical fiber element having a permanent protective coating with a shore D hardness value of 65 or more
    Patent number: RE36146
    Abstract: An optical fiber element includes an optical fiber having a numerical aperture ranging from 0.08 to 0.34 and a protective coating affixed to the outer surface of the optical fiber. The protective coating has a Shore D .?.hardnees.!. .Iadd.hardness .Iaddend.value of 65 or more and remains on the optical fiber during connectorization so that the fiber is neither damaged by the blades of a stripping tool nor subjected to chemical or physical attack.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: March 16, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James Craig Novack, Bryon James Cronk, James William Laumer, Tracy Ristow Woodward, David Arnold Krohn