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. 03, 1981
Filed:
May. 28, 1976
Applicant:
Inventors:
Assignee:
Pioneer Electronic Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G10K / ; G11B / ;
U.S. Cl.
CPC ...
428408 ; 29594 ; 148-6 ; 148 / ; 148 / ; 148 / ; 148 20 ; 148 203 ; 148 32 ; 181167 ; 181168 ; 181169 ; 181170 ; 264134 ; 264255 ; 427369 ; 427370 ; 4274197 ; 427 13 ; 427180 ; 428411 ; 428446 ; 428450 ; 428457 ; 369173 ; 751755 ; 75138 ; 75148 ; 75150 ;
Abstract
A vibrating member made of a thin metal plate and adapted to be used in an acoustic transducer such as a loudspeaker or microphone is diffused at least partially with an inorganic substance to improve the acoustic characteristics thereof, particularly the high frequency range.
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Tsukagoshi, Tsunehiro. (1981). Vibrating member for acoustic transducer and method for manufacturing (U.S. Patent No. 4254184). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4254184
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile