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. 07, 2019
Filed:
May. 16, 2016
Atsushi Ohshima, Kanagawa, JP;
Shigenobu Hirano, Kanagawa, JP;
Keiichiroh Yutani, Kanagawa, JP;
Takahiko Matsumoto, Kanagawa, JP;
Hidekazu Yaginuma, Kanagawa, JP;
Kazuaki Tsuji, Kanagawa, JP;
Sukchan Kim, Kanagawa, JP;
Yasuo Katano, Kanagawa, JP;
Kohji Takeuchi, Kanagawa, JP;
Shun Goto, Kanagawa, JP;
Tohru Hasegawa, Kanagawa, JP;
Hiroaki Kobayashi, Tokyo, JP;
Atsushi Ohshima, Kanagawa, JP;
Shigenobu Hirano, Kanagawa, JP;
Keiichiroh Yutani, Kanagawa, JP;
Takahiko Matsumoto, Kanagawa, JP;
Hidekazu Yaginuma, Kanagawa, JP;
Kazuaki Tsuji, Kanagawa, JP;
Sukchan Kim, Kanagawa, JP;
Yasuo Katano, Kanagawa, JP;
Kohji Takeuchi, Kanagawa, JP;
Shun Goto, Kanagawa, JP;
Tohru Hasegawa, Kanagawa, JP;
Hiroaki Kobayashi, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
An electrochromic dimming device is provided. The electrochromic dimming device includes an electrochromic element, a color development power source, a color discharge powder source, and a variable resistance. The color development power source supplies electric power to the electrochromic element when the electrochromic element develops color. The color discharge powder source supplies electric power to the electrochromic element when the electrochromic element discharges color. The variable resistance is disposed on a first current path without being disposed on a second current path. The first current path is formed from the color development power source through a ground via the electrochromic element, and the second current path is formed from the color discharge power source to the ground via the electrochromic element.