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:
Mar. 12, 2024
Filed:
Sep. 16, 2020
Applicant:
Seiko Instruments Inc., Chiba, JP;
Inventors:
Kosuke Yamamoto, Chiba, JP;
Shinji Kinoshita, Chiba, JP;
Hitoshi Takeuchi, Chiba, JP;
Tatsuya Omura, Chiba, JP;
Assignee:
SEIKO INSTRUMENTS INC., Chiba, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/14 (2006.01); G04C 3/14 (2006.01); H02K 15/02 (2006.01); H02K 37/16 (2006.01); G04C 3/12 (2006.01);
U.S. Cl.
CPC ...
H02K 1/143 (2013.01); G04C 3/14 (2013.01); H02K 15/022 (2013.01); H02K 37/16 (2013.01); G04C 3/12 (2013.01);
Abstract
A stator includes a magnetic plate material that has a main plate surface that is a surface to face a main plate of a movement when assembled to the main plate and that has a rotor accommodating hole formed in a part thereof; and a non-magnetic region that is made non-magnetic by applying chromium on the main plate surface around the rotor accommodating hole and irradiating the chromium with a laser from the main plate surface side.