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:
May. 09, 2023
Filed:
Jun. 11, 2018
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Bharat R. Acharya, Woodbury, MN (US);
Derek J. Dehn, Maplewood, MN (US);
Fabian Stolzenburg, Woodbury, MN (US);
Noah O. Shanti, Maplewood, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10K 11/165 (2006.01); C08J 9/00 (2006.01); C08J 9/28 (2006.01); C08K 3/22 (2006.01); C08K 5/01 (2006.01); G10K 11/162 (2006.01);
U.S. Cl.
CPC ...
C08J 9/0066 (2013.01); C08J 9/28 (2013.01); C08K 3/22 (2013.01); C08K 5/01 (2013.01); G10K 11/162 (2013.01); G10K 11/165 (2013.01); C08J 2201/0502 (2013.01); C08J 2201/0522 (2013.01); C08J 2325/04 (2013.01); C08J 2367/00 (2013.01); C08J 2369/00 (2013.01); C08J 2371/00 (2013.01); C08J 2375/04 (2013.01); C08J 2377/00 (2013.01); C08K 2201/005 (2013.01); C08K 2201/006 (2013.01);
Abstract
A polymer matrix composite includes a porous polymeric network structure; and a plurality of acoustically active particles distributed within the polymeric network structure. The weight fraction of acoustically active particles is between 0.80 and 0.99, based on the total weight of the polymer matrix composite. The polymer matrix composite has an air flow resistance of less than 100 seconds/50 mL/500 μm.