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:
Dec. 10, 2024
Filed:
Apr. 22, 2022
Toray Industries, Inc., Tokyo, JP;
Ryosuke Okanishi, Ehime, JP;
Shunsuke Tabayashi, Ehime, JP;
Yuta Amano, Ehime, JP;
Takao Sasaki, Ehime, JP;
Masaki Higashi, Ehime, JP;
Takashi Yoshino, Ehime, JP;
Hiroki Minehara, Shiga, JP;
Hiroaki Tanaka, Shiga, 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 having a height of 10 nm or more, and in the fold structure, a ratio (T100/T25) is less than 0.95, where T25 is a thickness of the thin membrane in a region of 0% to 25% of the height of the protrusion and T100 is a thickness of the thin membrane in a region of 50% to 100% of the height of the protrusion.