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:
Jul. 26, 2011
Filed:
Jul. 30, 2008
Applicants:
Stephen D. Gilder, Chula Vista, CA (US);
Jim Tiemens, Laguna Niguel, CA (US);
Larry Sanders, Chula Vista, CA (US);
Inventors:
Stephen D. Gilder, Chula Vista, CA (US);
Jim Tiemens, Laguna Niguel, CA (US);
Larry Sanders, Chula Vista, CA (US);
Assignee:
Sperian Hearing Protection, LLC, San Diego, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/20 (2006.01); B29C 44/34 (2006.01); C08L 75/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
An earpiece of flexible foam construction which incorporates recycled pulverized polyurethane foam (RPPF). RPPF constituting 5% to 30% of the improved foam has been found to be useful. The novel and unique nature of RPPF allows for the replacement of a higher cost component with a lower cost component while maintaining or improving physical properties, such as sound attenuation, sound control, comfort and fit.