The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 24, 1989
Filed:
Dec. 28, 1988
Shigeo Masuda, Kanagawa, JP;
Toshifumi Hosoya, Kanagawa, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
Optical-transmission fibers serve to transmit signal over some distance. Said fibers have traditionally been constructed of a glass fiber; consisting of a central core and an outside clad, a surrounding soft layer around said fiber and a hard layer around the soft layer. Because of the material construction, said fibers had high dynamic losses. By altering the materials used around the glass fiber, the present invention has successfully dramatically reduced the dynamic loss and therefore greatly improved the possibilities for signal transmission. The organic material used to enhance transmission ability may vary but the effect is such that the dynamic loss remains low as compared to any previous art.