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:
Mar. 16, 1993
Filed:
May. 15, 1991
Applicant:
Inventor:
Edouard A Gauthier, West Chester, PA (US);
Assignee:
Ensoniq Corporation, Malvern, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ; H04R / ; A61B / ;
U.S. Cl.
CPC ...
381 69 ; 381 68 ; 381 686 ; 181130 ; 181135 ;
Abstract
A hearing aid in which selected frequency components of sound being vented from the ear canal of the user of the hearing aid to eliminate the 'occlusion effect' are conducted to an acoustically isolated cavity to eliminate, or greatly reduce, feedback in the hearing aid.