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:
Sep. 03, 2019
Filed:
Jan. 23, 2017
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Jeffrey L. Hamer, Springville, IN (US);
Kenneth F. Teeters, Zionsville, IN (US);
Ravi Thomas, Avon, IN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
A61F 11/08 (2006.01); B29C 44/12 (2006.01); B29K 101/10 (2006.01); B29K 101/12 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
A61F 11/08 (2013.01); B29C 44/1271 (2013.01); A61F 2011/085 (2013.01); A61F 2210/0071 (2013.01); A61F 2240/004 (2013.01); A61F 2250/0014 (2013.01); B29K 2101/10 (2013.01); B29K 2101/12 (2013.01); B29L 2031/768 (2013.01);
Abstract
Hearing protection devices, e.g., push-to-fit earplugs, having a tip cavity in the sound attenuating body and methods of manufacturing the hearing protection devices are described herein.