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. 06, 2026
Filed:
Mar. 31, 2023
Applicant:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Inventor:
Koichi Tsujimoto, Tokyo, JP;
Assignee:
Asahi Kasei Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/13 (2006.01); C08F 110/02 (2006.01);
U.S. Cl.
CPC ...
C08K 5/13 (2013.01); C08F 110/02 (2013.01);
Abstract
An object of the present invention is to provide an ultrahigh-molecular-weight polyethylene powder that is excellent in molding processability by having a void in a central part of the powder, and a high-quality molded article (e.g., separator for secondary battery and fiber) prepared by molding the same. The ultrahigh-molecular-weight polyethylene powder has intrinsic viscosity IV of 1.0 dL/g or more and 33.0 dL/g or less, wherein a proportion of a predetermined void inside the powder determined by a specific method is 5% or more.