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. 10, 2000
Filed:
Jun. 25, 1997
Applicant:
Inventors:
Minoru Imaeda, Nagoya, JP;
Tatsuo Kawaguchi, Nagoya, JP;
Takahiro Inoue, Gifu, JP;
Masatomo Yamauchi, Haguri-Gun, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29O / ;
U.S. Cl.
CPC ...
264-121 ; 264-124 ; 264-17 ; 264-27 ; 385131 ;
Abstract
A process for producing an optical waveguide substrate including a ridge-shaped structural portion containing at least an optical waveguide, which process including the steps of forming an optical waveguide-forming layer on a substrate body to prepare a substrate workpiece, and forming said ridge-shaped structural portion at said substrate workpiece by grinding.