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:
May. 03, 2022
Filed:
Apr. 24, 2019
Ricoh Company, Ltd., Tokyo, JP;
Keigo Takauji, Kanagawa, JP;
Satoshi Yamamoto, Kanagawa, JP;
Fuminari Kaneko, Kanagawa, JP;
Kazuaki Tsuji, Kanagawa, JP;
Naoki Ura, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An electrochromic element is provided including: a first substrate; a first electrode overlying the first substrate; a second substrate disposed at a distance from the first electrode; a second electrode overlying the second substrate; a first electrochemical reaction layer in contact with the first electrode; a second electrochemical reaction layer in contact with the second electrode; and an electrolyte layer between the first electrode and the second electrode. One of the first electrochemical reaction layer and the second electrochemical reaction layer is in a reversibly oxidizable state and the other is in a reversibly reducible state, at least one of the first electrochemical reaction layer and the second electrochemical reaction layer is an electrochromic layer, and E1≥−0.8 V (vs. FC/FC) and E2≥−0.8 V (vs. FC/FC) are satisfied, where E1 and E2 represent oxidation-reduction potentials of the first electrochemical reaction layer and the second electrochemical reaction layer, respectively.