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:
May. 25, 2021
Filed:
May. 21, 2020
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK INSULATORS, LTD., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 8/00 (2006.01); C23C 28/00 (2006.01); G02B 1/14 (2015.01); C23C 4/134 (2016.01); C23C 14/08 (2006.01); G02B 6/122 (2006.01); F21S 41/24 (2018.01); F21S 41/176 (2018.01); F21S 41/39 (2018.01);
U.S. Cl.
CPC ...
G02B 6/0001 (2013.01); C23C 4/134 (2016.01); C23C 14/08 (2013.01); C23C 28/345 (2013.01); G02B 1/14 (2015.01); F21S 41/176 (2018.01); F21S 41/24 (2018.01); F21S 41/39 (2018.01); G02B 6/0003 (2013.01); G02B 6/122 (2013.01);
Abstract
An optical waveguide structure includes an optical waveguide, a reflection film provided on the optical waveguide and reflecting a light propagating in the optical waveguide, a metal film provided on the reflection film, and a surface oxidized film provided on the metal film and generated by surface oxidation of the metal film.