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. 27, 1998
Filed:
Feb. 14, 1995
Applicant:
Inventors:
Hiroshi Nishimoto, Tokyo, JP;
Tetsuyuki Suzaki, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
385-9 ; 385-3 ; 385-2 ; 385 14 ;
Abstract
A waveguide-type optical device includes a substrate with an electro-optical effect, two adjacent optical waveguides, a signal electrode covering either of the optical waveguides and an earth electrode covering the other optical waveguide and having a segment of the same form as the signal electrode which lies close to the other optical waveguide.