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:
Feb. 02, 1999
Filed:
Mar. 26, 1997
Applicant:
Inventors:
Takashi Yoshino, Nagoya, JP;
Tatsuo Kawaguchi, Nagoya, JP;
Minoru Imaeda, Nagoya, JP;
Kenji Kato, Ama-gun, JP;
Takashi Oguchi, Nagoya, JP;
Assignee:
NGK Insulators Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
4271632 ; 427271 ; 427287 ; 427555 ;
Abstract
A process for producing an optical waveguide device including a substrate and a ridge-shaped optical waveguide projected at a main plane of the substrate, comprising the steps of: forming said ridge shaped optical waveguide at the main plane of the substrate by abrasion working.