Patents by Inventor Tryggve Baak

Tryggve Baak 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).

  • Reinforced and chemically resistant optical filament
    Patent number: 4504113
    Abstract: This invention relates to an improved optical filament waveguide providing increased strength and resistance to moisture and chemical attack. This improved optical filament waveguide is particularly useful in the severe environment encountered in wellbore logging operations. This optical filament waveguide is the result of coating, preferably at a temperature below 500.degree. C., an optical filament rod with a relatively thin protective coating of a metal oxide whose coefficient of thermal expansion is of the same order of magnitude as that of the rod.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: March 12, 1985
    Assignee: Schlumberger Technology Corporation
    Inventor: Tryggve Baak