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:
Oct. 23, 2018
Filed:
Oct. 19, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 33/26 (2006.01); G01R 33/00 (2006.01); G01R 33/032 (2006.01);
U.S. Cl.
CPC ...
G01R 33/26 (2013.01); G01R 33/0052 (2013.01); G01R 33/032 (2013.01);
Abstract
A magnetism measurement apparatus that measures a magnetic field includes a gas cell including a primary chamber, a reservoir, and a exhaust hole that allows the primary chamber and the reservoir to communicate with each other. The primary chamber and the reservoir are filled with an alkali metal gas, and at least one of an alkali metal solid and an alkali metal liquid is placed in the reservoir.