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:
Jun. 20, 2023
Filed:
Jul. 14, 2020
Applicant:
Ricoh Company, Ltd., Tokyo, JP;
Inventors:
Tohru Hasegawa, Kanagawa, JP;
Keiichiroh Yutani, Kanagawa, JP;
Assignee:
RICOH COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/157 (2006.01); G02F 1/155 (2006.01); G02F 1/163 (2006.01);
U.S. Cl.
CPC ...
G02F 1/157 (2013.01); G02F 1/155 (2013.01); G02F 1/163 (2013.01);
Abstract
An electrochromic device includes: an electrochromic element operating in at least one of a first optical characteristic state and a second optical characteristic state; and a temperature measuring device configured to measure temperature, and circuitry to control voltage to be applied to the electrochromic element such that the second optical characteristic state becomes constant irrespective of the measured temperature.