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. 16, 2018
Filed:
Feb. 11, 2015
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Seiji Sarayama, Miyagi, JP;
Masahiko Shimada, Miyagi, JP;
Hisanori Yamane, Miyagi, JP;
Hirokazu Iwata, Miyagi, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 29/40 (2006.01); C30B 7/10 (2006.01); C30B 9/00 (2006.01); C30B 11/00 (2006.01); C30B 15/00 (2006.01); H01L 29/778 (2006.01); C30B 7/00 (2006.01); C09K 11/62 (2006.01); H01L 29/20 (2006.01);
U.S. Cl.
CPC ...
C30B 7/105 (2013.01); C09K 11/62 (2013.01); C30B 7/00 (2013.01); C30B 9/00 (2013.01); C30B 11/00 (2013.01); C30B 15/00 (2013.01); C30B 29/403 (2013.01); C30B 29/406 (2013.01); H01L 29/7783 (2013.01); H01L 29/2003 (2013.01); Y10T 117/1092 (2015.01); Y10T 117/1096 (2015.01); Y10T 428/2982 (2015.01);
Abstract
A crystal has a diameter of 1 cm or more and shows a strongest peak in cathode luminescent spectrum at a wavelength of 360 nm in correspondence to a band edge.