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:
Sep. 13, 2022
Filed:
Feb. 08, 2021
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Yoshiharu Kimura, Tokyo, JP;
Shigetaka Tsubouchi, Tokyo, JP;
Kota Otake, Tokyo, JP;
Masahiro Kawasaki, Tokyo, JP;
Assignee:
HITACHI, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 19/06 (2006.01); G06K 1/12 (2006.01); B41M 3/14 (2006.01);
U.S. Cl.
CPC ...
G06K 19/06046 (2013.01); B41M 3/142 (2013.01); G06K 1/121 (2013.01); G06K 19/06037 (2013.01);
Abstract
Disclosed is a mechanically readable code including a first area comprising multiple first unit cells and including an information region where information was recorded and a second area including multiple second unit cells including an allochroic cell that changes in color depending on a physical quantity. The multiple first unit cells include transitional color cells having any transitional color in the process of color change of the allochroic cell.