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:
Feb. 04, 2025
Filed:
Jan. 05, 2022
Applicant:
Yamaha Corporation, Shizuoka, JP;
Inventor:
Tomoya Miyata, Shizuoka, JP;
Assignee:
YAMAHA CORPORATION, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 23/22 (2006.01); H04R 1/02 (2006.01); C08K 3/013 (2018.01);
U.S. Cl.
CPC ...
C08L 23/22 (2013.01); H04R 1/02 (2013.01); C08K 3/013 (2018.01); H04R 2201/029 (2013.01);
Abstract
A composition for an acoustic member includes a non-diene butyl rubber, and a liquid polymer having a molecular weight of 1,000 to 120,000. A difference in an SP value between the liquid polymer and the butyl rubber is within ±0.5.