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:
Nov. 08, 2022
Filed:
Apr. 20, 2020
Applicant:
Fujifilm Business Innovation Corp., Tokyo, JP;
Inventors:
Kosuke Nakada, Kanagawa, JP;
Hidekazu Hirose, Kanagawa, JP;
Yasunobu Kashima, Kanagawa, JP;
Kosaku Yoshimura, Kanagawa, JP;
Tomoya Sasaki, Kanagawa, JP;
Assignee:
FUJIFILM Business Innovation Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 50/411 (2021.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 50/411 (2021.01); H01M 10/0525 (2013.01);
Abstract
A porous polyimide film has plural pores, in which an average flattening of the plural pores is within a range of 0.1 to 0.7, a coefficient of variation of a distance between adjacent pores is within a range of 0.10 to 0.40, and a front surface and aback surface communicate with each other through the plural pores.