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:
Jan. 21, 2020
Filed:
Oct. 23, 2018
Fuji Xerox Co., Ltd., Tokyo, JP;
Hajime Sugahara, Kanagawa, JP;
Hidekazu Hirose, Kanagawa, JP;
Katsumi Nukada, Kanagawa, JP;
Tomoya Sasaki, Kanagawa, JP;
Kosaku Yoshimura, Kanagawa, JP;
Akira Imai, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
A porous polyimide shaped article has a thickness in a range from 550 μm to 3,000 μm and has a relative dielectric constant of 1.8 or less and a dielectric loss tangent of 0.01 or less at 1 MHz. The porous polyimide shaped article satisfies the following formula:1.2≤≤1.6wherein A represents a square root of a ratio of a pore size Dwhere a cumulative percentage by number of pores from smaller sizes is 84% to a pore size Dwhere the cumulative percentage by number of the pores from smaller sizes is 16% ((D/D)) in a pore size distribution measured by mercury intrusion porosimetry.