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:
Apr. 06, 2021
Filed:
Sep. 01, 2017
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
James P. Endle, New Richmond, WI (US);
Jeffrey L. Hamer, Springville, IN (US);
Alan R. Seville, Indianapolis, IN (US);
Kenneth F. Teeters, Zionsville, IN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
A61F 11/08 (2006.01); B29C 44/50 (2006.01); C08J 9/10 (2006.01); C08J 9/32 (2006.01); B29C 44/02 (2006.01); B29C 44/04 (2006.01); B29C 44/32 (2006.01); B29C 44/08 (2006.01); B29C 44/26 (2006.01); B29L 31/00 (2006.01); B29K 23/00 (2006.01); B29K 105/04 (2006.01);
U.S. Cl.
CPC ...
A61F 11/08 (2013.01); B29C 44/022 (2013.01); B29C 44/04 (2013.01); B29C 44/08 (2013.01); B29C 44/26 (2013.01); B29C 44/324 (2013.01); B29C 44/50 (2013.01); B29C 44/507 (2016.11); C08J 9/105 (2013.01); C08J 9/32 (2013.01); A61F 2011/085 (2013.01); B29K 2023/12 (2013.01); B29K 2105/04 (2013.01); B29L 2031/768 (2013.01); C08J 2203/04 (2013.01); C08J 2203/184 (2013.01); C08J 2203/22 (2013.01); C08J 2353/02 (2013.01);
Abstract
A push-in earplug including an elongate core and outer layer is disclosed. The outer layer includes a sound attenuating portion having a first average density and a stem portion having a second average density, and the second average density is greater than the first average density.