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:
Dec. 11, 2012
Filed:
Aug. 04, 2010
Applicants:
William Parish, Maplewood, MN (US);
Vasant V. Kolpe, Mendota Heights, MN (US);
Inventors:
William Parish, Maplewood, MN (US);
Vasant V. Kolpe, Mendota Heights, MN (US);
Assignee:
Hearing Components, Inc., Oakdale, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B 7/02 (2006.01); A61F 11/00 (2006.01); H04R 25/00 (2006.01); H04R 25/02 (2006.01); H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are foam compositions with enhanced sound attenuation characteristics for use in earpieces, for example, user-disposable foam members such as foam tips for sound control devices including sound transmission devices and earplugs in which a relationship between the size of the pores and the volume of the cells of the polymeric may be controlled.