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:
Feb. 21, 2023
Filed:
Aug. 14, 2019
Applicant:
Fujifilm Business Innovation Corp., Tokyo, JP;
Inventors:
Yasunobu Kashima, Kanagawa, JP;
Kosaku Yoshimura, Kanagawa, JP;
Hajime Sugahara, Kanagawa, JP;
Hidekazu Hirose, Kanagawa, JP;
Assignee:
FUJIFILM Business Innovation Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 10/00 (2006.01); C08J 9/00 (2006.01); H01M 10/0525 (2010.01); H01M 50/411 (2021.01);
U.S. Cl.
CPC ...
C08J 9/0061 (2013.01); H01M 10/0525 (2013.01); H01M 50/411 (2021.01); C08J 2205/04 (2013.01); C08J 2205/044 (2013.01); C08J 2205/05 (2013.01); C08J 2325/14 (2013.01); C08J 2333/12 (2013.01); C08J 2479/08 (2013.01);
Abstract
There is provided a porous polyimide film in which the pore distribution width A represented by the following formula is 1.15 or less, the average pore diameter is within a range of 0.50 μm to 3.0 μm, and the air permeation speed is 30 seconds or less:=()