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. 14, 2010
Filed:
Dec. 19, 2007
Applicant:
Duncan Taylor, Indianapolis, IN (US);
Inventor:
Duncan Taylor, Indianapolis, IN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is an earplug that includes a sound attenuating portion and a feature formed by laser ablation, wherein the feature comprises a cavity formed in a first end of the sound attenuating portion including a cylindrical shape extending into the sound attenuating portion, along a longitudinal axis of the sound attenuating portion, toward a second end of the sound attenuating portion opposite the first end, the earplug further comprising at least one of a cord, a stem, and a detectable insert disposed in the cavity.