Global Patent Index - EP 1000465 A1

EP 1000465 A1 2000-05-17 - UNIDIRECTIONAL TRANSDUCER ETCHED WITH SURFACE ACOUSTIC WAVES

Title (en)

UNIDIRECTIONAL TRANSDUCER ETCHED WITH SURFACE ACOUSTIC WAVES

Title (de)

GRAVIERTER UNIDIREKTIONALER AKUSTISCHER OBERFLÄCHENWELLENWANDLER

Title (fr)

TRANSDUCTEUR UNIDIRECTIONNEL GRAVE A ONDES ACOUSTIQUES DE SURFACE

Publication

EP 1000465 A1 (FR)

Application

EP 99920942 A

Priority

  • FR 9901265 W
  • FR 9806834 A

Abstract (en)

[origin: FR2779289A1] The invention concerns a transducer with surface acoustic waves wherein an etched grid is overlaid on the standard electrode arrays of acoustic transducers. The overlay of said arrays enables to obtain a preferential direction for the propagation of the acoustic waves while maintaining a high quality factor Q comparable to that of standard birectional transducers. The invention is applicable to mobile radio communication.

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

H03H 9/145

IPC 8 full level (invention and additional information)

H03H 9/145 (2006.01)

CPC (invention and additional information)

H03H 9/14505 (2013.01)

Citation (search report)

See references of WO 9963662A1

Designated contracting state (EPC)

DE FI FR GB IT SE

EPO simple patent family

FR 2779289 A1 19991203; FR 2779289 B1 20000901; CA 2297799 A1 19991209; CN 1155153 C 20040623; CN 1272248 A 20001101; EP 1000465 A1 20000517; JP 2002517933 A 20020618; US 6414414 B1 20020702; WO 9963662 A1 19991209

INPADOC legal status


2005-07-06 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050105

2001-10-04 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: THALES

2000-05-17 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991111

2000-05-17 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FI FR GB IT SE