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. 20, 2014
Filed:
Mar. 14, 2006
Applicants:
Tatsuya Usui, Hitachinaka, JP;
Naoaki Shimura, Hitachinaka, JP;
Yasushi Kurata, Hitachinaka, JP;
Kazuhisa Kurashige, Hitachinaka, JP;
Inventors:
Tatsuya Usui, Hitachinaka, JP;
Naoaki Shimura, Hitachinaka, JP;
Yasushi Kurata, Hitachinaka, JP;
Kazuhisa Kurashige, Hitachinaka, JP;
Assignee:
Hitachi Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C30B 15/14 (2006.01); C30B 21/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A single crystal heat treatment method having a step of heating a single crystal of a specific cerium-doped silicate compound in an oxygen-poor atmosphere at a temperature T(units: ° C.) that satisfies the conditions represented by formula (3) below800≦<(−550)  (3)