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. 27, 2010
Filed:
May. 21, 2008
Masayuki Nara, Tsukuba, JP;
Makoto Abbe, Tsukuba, JP;
Masayuki Nara, Tsukuba, JP;
Makoto Abbe, Tsukuba, JP;
Mitutoyo Corporation, Kawasaki-shi, JP;
Abstract
A two-dimensional lattice calibrating device includes: a measuring unit that measures respective positions of marks for each of a plurality of measurement dispositions; a simultaneous-equations generating unit that generates simultaneous equations for acquiring deviations of the plurality of marks using a coordinate relational equation and a least-squares conditional equation that sets least-squares lines that minimize the deviation of actual position of the marks based on measurement values as coordinate axes of artifact coordinates; and a simultaneous-equations calculating unit that solves the derived simultaneous equations.