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:
Jul. 23, 2024
Filed:
Mar. 31, 2021
Applicant:
Mitutoyo Corporation, Kawasaki, JP;
Inventors:
Toshihiko Aoki, Kanagawa, JP;
Kosaku Miyake, Kanagawa, JP;
Assignee:
MITUTOYO CORPORATION, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D 5/38 (2006.01); G01D 5/347 (2006.01); G02B 5/18 (2006.01); G02B 27/42 (2006.01);
U.S. Cl.
CPC ...
G01D 5/38 (2013.01); G01D 5/34707 (2013.01); G01D 5/34746 (2013.01); G02B 5/18 (2013.01); G02B 5/1857 (2013.01); G02B 5/1861 (2013.01); G02B 27/42 (2013.01);
Abstract
A scale includes a substrate, a metal layer of Ni formed on one principal surface of the substrate, and a scale grating formed on the metal layer. A plurality of gratings of Cr are disposed at a predetermined interval in the scale grating.