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:
Mar. 22, 2022
Filed:
Jul. 21, 2020
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Satoshi Kito, Chino, JP;
Osamu Arakawa, Shiojiri, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 11/02 (2006.01); G03B 21/20 (2006.01); G02B 26/00 (2006.01);
U.S. Cl.
CPC ...
C09K 11/02 (2013.01); G02B 26/008 (2013.01); G03B 21/204 (2013.01);
Abstract
A ceramic composite according to the present disclosure has a phosphor phase containing an activator and a phosphor and a matrix phase containing MgO as a light transmissive ceramic material. The ceramic composite is made of an inorganic material, and the content of the phosphor phase is so set that the volume ratio of the phosphor phase to the entire phase including the matrix phase and the phosphor phase is lower than or equal to 20 vol %.