Patents by Inventor Yves Michel Trehu

Yves Michel Trehu 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).

  • Low attenuation, high strength optical fiber with silica filament core
    Patent number: 4116654
    Abstract: Low attenuation, high strength optical fiber is made by drawing a silica filament core at a temperature from 2040.degree. C. to 2140.degree. C. and melt coating onto it cladding polymer having an index of refraction lower than that of the silica core by extrusion at a draw-down ratio from 1.2 to 2.0.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: September 26, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Yves Michel Trehu