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Extract from the Register of European Patents

EP About this file: EP0579048

EP0579048 - Batch sinterable at low temperatures for manufacture of piezoelectric, ceramic formed bodies and formed body manufactured therefrom by sintering [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  13.11.1998
Database last updated on 13.07.2024
Most recent event   Tooltip13.11.1998Application deemed to be withdrawnpublished on 30.12.1998 [1998/53]
Applicant(s)For all designated states
CeramTec AG Innovative Ceramic Engineering
Fabrikstrasse 23 - 29
73207 Plochingen / DE
[N/P]
Former [1997/02]For all designated states
CeramTec AG Innovative Ceramic Engineering
Fabrikstrasse 23 - 29
73207 Plochingen / DE
Former [1994/03]For all designated states
Hoechst CeramTec Aktiengesellschaft
Wilhelmstrasse 14
D-95100 Selb / DE
Inventor(s)01 / Helke, Günter, Dr.
Breite Strasse 29
D-8560 Lauf / DE
02 / Langer, Hans-Joachim
Holzstrasse 45
D-8560 Lauf / DE
03 / Handschuh, Kurt
Am Weinberg
D-8501 Eckental / DE
[1994/03]
Representative(s)Schulz, Wilfried, et al
Dynamit Nobel AG Abt.Patente und Dokumentation
53839 Troisdorf / DE
[N/P]
Former [1998/17]Schulz, Wilfried, Dipl.-Ing., et al
Dynamit Nobel AG Abt.Patente und Dokumentation
53839 Troisdorf / DE
Former [1997/02](deleted)
Former [1994/03]Hoffmann, Peter, Dipl.-Chem., et al
Hoechst AG Patent- und Lizenzabteilung Gebäude K 801
D-65926 Frankfurt am Main / DE
Application number, filing date93110514.201.07.1993
[1994/03]
Priority number, dateDE1992422318615.07.1992         Original published format: DE 4223186
[1994/03]
Filing languageDE
Procedural languageDE
PublicationType: A2 Application without search report 
No.:EP0579048
Date:19.01.1994
Language:DE
[1994/03]
Type: A3 Search report 
No.:EP0579048
Date:26.03.1997
[1997/13]
Search report(s)(Supplementary) European search report - dispatched on:EP06.02.1997
ClassificationIPC:H01L41/187
[1997/07]
CPC:
H10N30/853 (EP)
Former IPC [1994/03]H01L41/00
Designated contracting statesDE,   GB,   NL [1994/03]
TitleGerman:Bei niedrigen Temperaturen sinterbarer Versatz zur Herstellung von piezoelektrischen, keramischen Formkörpern und daraus durch Sintern hergestellte Formkörper[1994/03]
English:Batch sinterable at low temperatures for manufacture of piezoelectric, ceramic formed bodies and formed body manufactured therefrom by sintering[1994/03]
French:Composition frittable à basse température pour la fabrication de formes piézoélectriques céramiques et formes fabriquées à partir de ces compositions par frittage[1994/03]
Examination procedure26.09.1997Examination requested  [1997/48]
24.02.1998Despatch of a communication from the examining division (Time limit: M04)
07.07.1998Application deemed to be withdrawn, date of legal effect  [1998/53]
05.08.1998Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [1998/53]
Fees paidRenewal fee
31.07.1995Renewal fee patent year 03
31.07.1996Renewal fee patent year 04
31.07.1997Renewal fee patent year 05
31.07.1998Renewal fee patent year 06
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Documents cited:Search[X]US3580846  (OKUYAMA CHIYOSHI, et al) [X] 1,7,8 * example B6 *;
 [X]GB2077253  (HITACHI LTD) [X] 1-3,9 * claim - *;
 [X]DE3200339  (MURATA MANUFACTURING CO [JP]) [X] 1,7,8 * page 2, line 6 - page 3, line 17 *;
 [A]EP0376508  (BATTELLE MEMORIAL INSTITUTE [US]) [A] 1-10 * claim - *;
 [X]  - SAVENKOVA, G. E. ET AL, "Piezoelectric ceramic based on lead zirconate titanate with superior piezoelectric properties", CHEMICAL ABSTRACTS, (19730409), vol. 78, no. 14, Database accession no. 89952, XP002021639 [X] 1,2,5,6 * abstract *
 [DA]  - R.B. ATKIN ET AL, "Substitution of Bi and Nb Ions in Lead Zirconate-Titanate", JOURNAL OF THE AMERICAN CERAMIC SOCIETY, COLUMBUS US, (1971), vol. 54, no. 2, pages 113 - 115, XP002021638 [DA] 1 * the whole document *
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.