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:
Aug. 16, 2022
Filed:
Sep. 12, 2019
Foster Electric Company, Limited, Tokyo, JP;
Foster Electric Company, Limited, Tokyo, JP;
Abstract
A diaphragm has a configuration including a diaphragm main body, a cone part on an outer periphery of the diaphragm main body, a ring member joined to the cone part, and an edge having an inner periphery joined to an outer periphery of the ring member or an outer periphery of the cone part. This configuration improves the rigidity without changing the shape of the diaphragm main body, that is, without giving rise to a mass increase in the diaphragm main body, and keeps the sound pressure from decreasing in a high frequency range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile