Patent · US Expired

Component having an acoustically active material for tuning during operation

US6847271B2 · kind B2 · utility

5Cited by

16References

17Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Christian Korden · Birkenfeld, DE
Thomas Ostertag · Ulm, DE
Werner Ruile · Birkenfeld, DE

Key dates

Filing date	Sep 20, 2001
Grant date	Jan 25, 2005
Priority date	—
Expiry date	Nov 1, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH03H2009/02196
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A component having an acoustically active material, whose acoustic constants can be at least partially altered. The acoustically active material is located at least partially at a phase transition point and/or in the vicinity of a phase transition point.

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