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. 15, 2009
Filed:
Jul. 14, 2004
Heikki Raisanen, Jyvaskyla, FI;
Heikki Raisanen, Jyvaskyla, FI;
B-Band Oy, Vaajakoski, FI;
Abstract
Electromechanical transducer element for converting mechanical force, such as vibrations, into electrical signals and a method for fabricating the same, the transducer having a layered structure and comprising: signal and ground layers (-) and dielectric layer(s) (), the dielectric layers being permanently charged elastic cellular electret film layer(s), and wherein the transducer element is provided with additional material in order to improve the electric properties, and wherein in that the additional material () is disposed in between the permanently charged elastic cellular electret film and at least one electrode of the element so that under compression the elastic electret film compresses most at the areas being directly against the additional material and less at the other areas of the element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile