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. 07, 2025
Filed:
Apr. 22, 2022
Toray Industries, Inc., Tokyo, JP;
Shunsuke Tabayashi, Ehime, JP;
Ryosuke Okanishi, Ehime, JP;
Yuta Amano, Ehime, JP;
Takashi Yoshino, Ehime, JP;
Takao Sasaki, Ehime, JP;
Hiroki Minehara, Shiga, JP;
Masaki Higashi, Ehime, JP;
TORAY INDUSTRIES, INC., Tokyo, JP;
Abstract
The present invention relates to a composite semipermeable membrane including: a support membrane; and a separation functional layer provided on the support membrane, in which the separation functional layer includes a thin membrane, the thin membrane has a fold structure including a plurality of protrusions, an actual length L of the thin membrane per 1 μm length of the support membrane in a cross-sectional direction perpendicular to a membrane surface is 3.0 μm or more, and a thickness of the thin membrane in the protrusion is 15 nm or more.