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:
Jan. 17, 1978
Filed:
Mar. 09, 1976
Jean Claude Dubois, Paris, FR;
Maryse Gazard, Paris, FR;
Claude Duchesne, Paris, FR;
Jean Claude Lavenu, Paris, FR;
Thomson-CSF, Paris, FR;
Abstract
A method of manufacturing an electron-sensitive resin capable of constituting the material of an optical waveguide having a width of the order of 1 micron and transmission loss lower than 2 db/cm, is provided. The method comprises, carried out under conditions of extremely high purity, the hydrolysis of trichlorosilane, to give phenylsilanetriol, the preparation of a benzenic collodion of this product and then the polymerization in the hot state of a phenylsilanetriol solution, and the conversion of the resultant polymer into the polyphenylsiloxanol which is fractionated by successive extremely fine filtering operations carried out upon a solution of this product, into batches having different degrees of polymerization, each of them fitting a typical optical waveguide.