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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 12784999 B1

PDFFull Text
Date of Patent:
Nov. 03, 2026

Filed:

Dec. 15, 2020

Carbonaceous material, method for producing same, electrode active material for electric double layer capacitors, electrode for electric double layer capacitors, and electric double layer capacitor

Applicant:

Kuraray Co., Ltd., Kurashiki, JP;

Inventors:

Minoru Matsushita, Bizen, JP;

Mitsunori Hitomi, Bizen, JP;

Shushi Nishimura, Bizen, JP;

Hiroyuki Nishinami, Bizen, JP;

Takayuki Yamada, Bizen, JP;

Assignee:

KURARAY CO., LTD., Kurashiki, JP;

Attorney:

Element IP, PLC

Primary Examiner:

Ronak C Patel

Int. Cl.
CPC ...
H01G 11/34 (2013.01); C01B 32/318 (2017.01); C01B 32/348 (2017.01); C01B 32/378 (2017.01);
U.S. Cl.
CPC ...
H01G 11/34 (2013.01); C01B 32/318 (2017.08); C01B 32/348 (2017.08); C01B 32/378 (2017.08); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/40 (2013.01); C01P 2006/80 (2013.01);
Abstract

The present invention relates to a carbonaceous material having a silicon element content of less than 200 ppm, a powder conductivity of 10.0 to 22.0 S/cm, a total amount of surface functional groups of 0.22 to 0.36 meq/g, and a pore volume of 0.10 to 0.20 cm/g in terms of pores having a pore size of not less than 4 nm as measured by a BJH method.

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Matsushita, Minoru. (2026). Carbonaceous material, method for producing same, electrode active material for electric double layer capacitors, electrode for electric double layer capacitors, and electric double layer capacitor (U.S. Patent No. 12784999). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12784999

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