Global Patent Index - EP 1103078 A1

EP 1103078 A1 2001-05-30 - OFFSET ARRANGEMENT OF ELECTRODES ON A PIEZOELECTRIC TRANSDUCER

Title (en)

OFFSET ARRANGEMENT OF ELECTRODES ON A PIEZOELECTRIC TRANSDUCER

Title (de)

VERSETZTE ELEKTRODENANORDNUNG AUF EINEM PIEZOELEKTRISCHEN WANDLER

Title (fr)

ELECTRODES DECALEES SUR UN TRANSDUCTEUR PIEZO-ELECTRIQUE

Publication

EP 1103078 A1 (EN)

Application

EP 99931636 A

Priority

  • NZ 9900112 W
  • NZ 33109698 A
  • NZ 33169798 A
  • NZ 33169898 A

Abstract (en)

[origin: WO0005771A1] A transducer comprises a piezoelectric member (29) which deforms in use to provide an electrical output, and first and second electrodes (22, 26) arranged on opposed sides of the piezoelectric member to pick up the electrical output. The electrodes (22, 26) are offset so as to provide one or more regions in which the electrodes (22, 26) do not overlap. One or both electrodes (22, 26) may be discontinuous and may comprise a plurality of fingers. The piezoelectric member (29) may be in the form of a sheet.

IPC 1-7 (main, further and additional classification)

H01L 41/047; H01L 41/083; H01L 41/113

IPC 8 full level (invention and additional information)

A61B 5/0205 (2006.01); H01L 41/113 (2006.01); A61B 5/103 (2006.01)

CPC (invention and additional information)

A61B 5/0205 (2013.01); H01L 41/113 (2013.01); H01L 41/1132 (2013.01); A61B 5/1071 (2013.01)

Citation (search report)

See references of WO 0005771A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0005771 A1 20000203; AU 4808099 A 20000214; BR 9912365 A 20010417; CA 2338254 A1 20000203; EP 1103078 A1 20010530

INPADOC legal status


2008-02-29 [REG HK WD] APPLICATIONS WITHDRAWN, DEEMED TO BE WITHDRAWN, OR REFUSED AFTER PUBLICATION IN HONG KONG

- Document: HK 1039400

2004-08-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030801

2001-05-30 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010222

2001-05-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-05-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI