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.:

US 8120331 B1

PDF
Full Text
Expired
Date of Patent:
Feb. 21, 2012

Filed:

Sep. 08, 2008
Applicants:

Hiroyuki Takahashi, Kanagawa, JP;

Yusuke Ozaki, Tokyo, JP;

Eiji Nemoto, Tokyo, JP;

Yuji Matsuda, Tokyo, JP;

Hiroki Ohkubo, Kanagawa, JP;

Inventors:

Hiroyuki Takahashi, Kanagawa, JP;

Yusuke Ozaki, Tokyo, JP;

Eiji Nemoto, Tokyo, JP;

Yuji Matsuda, Tokyo, JP;

Hiroki Ohkubo, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02J 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A power supply device accumulates charges generated by a photovoltaic unit. The power supply device includes a first capacitor having a first capacitance, in which the charges generated by the photovoltaic unit are charged; a second capacitor having a second capacitance that is larger than the first capacitance; and a switching unit that switches between a first connection of connecting the photovoltaic unit to the first capacitor and a second connection of connecting the first capacitor to the second capacitor.


Find Patent Forward Citations

Takahashi, Hiroyuki. (2012). Power supply device, scanner power supply device, and image forming apparatus (U.S. Patent No. 8120331). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8120331

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