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:
Feb. 19, 2008
Filed:
Dec. 08, 2005
Applicants:
Tetsuhiko Kubo, Utsunomiya, JP;
Yukinari Nozawa, Utsunomiya, JP;
Inventors:
Tetsuhiko Kubo, Utsunomiya, JP;
Yukinari Nozawa, Utsunomiya, JP;
Assignee:
Mitutoyo Corporation, Kawasaki-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/36 (2006.01); H03M 1/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A main scalehas protrusive gratingof a thin film of e.g. Cr formed on a base member. The base memberand the Cr thin film constitute a reflecting face which is set to provide the sufficient quantity of received light on a light receiving side. The protrusive gratingcan be formed accurately by photo-etching the thin film.