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:
Mar. 28, 2023
Filed:
Apr. 17, 2019
Applicant:
Tokyo Ohka Kogyo Co., Ltd., Kawasaki, JP;
Inventors:
Yasuo Suzuki, Kawasaki, JP;
Atsushi Murota, Kawasaki, JP;
Takashi Ohsaka, Kawasaki, JP;
Toshiyuki Ogata, Kawasaki, JP;
Assignee:
TOKYO OHKA KOGYO CO., LTD., Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01L 3/00 (2006.01); G01N 33/543 (2006.01);
U.S. Cl.
CPC ...
B01L 3/502761 (2013.01); G01N 33/54386 (2013.01); B01L 2200/0652 (2013.01); B01L 2200/12 (2013.01); B01L 2300/0681 (2013.01); B01L 2300/0864 (2013.01); B01L 2300/0887 (2013.01);
Abstract
A filter film includes a through-hole and a recessed portion having a size capable of capturing one particle, in which the recessed portion is open to one face of the filter film, the through-hole in the one face has a shape or a size such that the one particle is not capable of passing through the through-hole, and the through-hole and the recessed portion are disposed close to each other.