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. 27, 2021
Filed:
Nov. 06, 2018
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Koji Chindo, Chino, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03L 7/26 (2006.01); H03B 17/00 (2006.01); G04F 5/14 (2006.01);
U.S. Cl.
CPC ...
H03L 7/26 (2013.01); G04F 5/14 (2013.01); H03B 17/00 (2013.01);
Abstract
A frequency signal generation apparatus includes a light source, an atom cell with gaseous alkali metal atoms and a buffer gas enclosed therein, through which light output from the light source passes, and a container with a gas containing gas molecules in common with the buffer gas enclosed, housing the atom cell, wherein pressure of the common gas molecules is substantially the same within the atom cell and within the container.