Patent · US Active

Piezoelectric partial-surface sound transducer

US9148728B2 · kind B2 · utility

1Cited by

6References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Steffen Polster · Stuttgart, DE
Andre Gerlach · Leonberg, DE
Claudia Arnold · Stuttgart, DE
Stefan Zimmermann · Laufenbürg, DE

Key dates

Filing date	Oct 26, 2011
Grant date	Sep 29, 2015
Priority date	—
Expiry date	Oct 26, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2201/401
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A piezoelectric sound transducer using a piezoelectric plastic material is developed from a substrate layer and a layer of a piezoelectric plastic material deposited thereon, the piezoelectric plastic layer covering the substrate layer not completely but having openings.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.