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:
Apr. 12, 2016
Filed:
Dec. 19, 2014
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Hiroyuki Yoshida, Suwa, JP;
Tomohiro Tamura, Suwa, JP;
Assignee:
Seiko Epson Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/26 (2006.01); G04F 5/14 (2006.01);
U.S. Cl.
CPC ...
H03L 7/26 (2013.01); G04F 5/14 (2013.01);
Abstract
A gas cell includes an internal space in which metal atoms and a buffer gas are sealed. The buffer gas includes a gas mixture including nitrogen gas and argon gas. The mole fraction of the argon gas in the gas mixture is equal to or greater than 15% and equal to or less than 40%.