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:
Jan. 13, 2009
Filed:
Oct. 15, 2004
Applicants:
Richard E. Knauer, Carmel, IN (US);
Alan R. Seville, Indianapolis, IN (US);
Inventors:
Richard E. Knauer, Carmel, IN (US);
Alan R. Seville, Indianapolis, IN (US);
Assignee:
Cabot Safety Intermediate Corporation, Southbridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F 11/00 (2006.01); A61B 7/02 (2006.01); B29C 44/34 (2006.01); C08F 110/00 (2006.01); C08F 14/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An earplug comprising a foam composition containing a polyvinyl chloride resin and less than about 5 wt % monomeric phthalate, based on the total weight of the foam composition, is described. The foam composition may include a plasticizer containing less than or equal to about 2 wt % monomeric phthalate, based on the total weight of the plasticizer. The earplugs have slow recovery times from 60 percent compression to 10 percent compression of about 10 to about 60 seconds.