-
EP0172738
European procedure
Extract from the Register of European Patents
EP About this file: EP0172738
| EP0172738 - Stabilized zirconia bodies of improved toughness and production thereof [Right-click to bookmark this link] | Status | Patent revoked Status updated on 12.08.1991 Database last updated on 06.11.2024 | Most recent event Tooltip | 17.04.2015 | Change - lapse in a contracting state State(s) deleted from list of lapses: CH, LI | published on 20.05.2015 [2015/21] | Applicant(s) | For all designated states DIDIER-WERKE AG Lessingstrasse 16-18 65189 Wiesbaden / DE | [N/P] |
| Former [1989/15] | For all designated states DIDIER-WERKE AG Lessingstrasse 16-18 D-65189 Wiesbaden / DE | ||
| Former [1986/09] | For all designated states Corning Glass Works Houghton Park Corning New York 14831 / US | Inventor(s) | 01 /
Guile, Donald Lloyd 1245 Stonybrook East Horseheads New York / US | [1986/09] | Representative(s) | Brückner, Raimund Didier-Werke AG Abraham-Lincoln-Strasse 1 65189 Wiesbaden / DE | [N/P] |
| Former [1990/46] | Brückner, Raimund, Dipl.-Ing. c/o Didier-Werke AG Lessingstrasse 16-18 D-65189 Wiesbaden / DE | ||
| Former [1986/09] | Froud, Clive Elkington and Fife Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR / GB | Application number, filing date | 85305849.3 | 16.08.1985 | [1986/09] | Priority number, date | US19840642091 | 20.08.1984 Original published format: US 642091 | [1986/09] | Filing language | EN | Procedural language | DE | Publication | Type: | A2 Application without search report | No.: | EP0172738 | Date: | 26.02.1986 | Language: | EN | [1986/09] | Type: | A3 Search report | No.: | EP0172738 | Date: | 01.04.1987 | Language: | EN | [1987/14] | Type: | B1 Patent specification | No.: | EP0172738 | Date: | 23.11.1989 | Language: | EN | [1989/47] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 10.02.1987 | Classification | IPC: | C04B35/48 | [1986/09] | CPC: |
C04B35/486 (EP,US);
Y10T428/2993 (EP,US)
| Designated contracting states | AT, BE, CH, DE, FR, GB, LI, NL, SE [1986/09] | Title | German: | Stabilisierte Zircondioxidkörper mit verbesserter Festikeit und ihre Herstellung | [1986/09] | English: | Stabilized zirconia bodies of improved toughness and production thereof | [1986/09] | French: | Corps en zircone stabilisés ayant une dureté améliorée et leur fabrication | [1986/09] | Examination procedure | 08.09.1987 | Examination requested [1987/45] | 04.04.1989 | Despatch of communication of intention to grant (Approval: Yes) | 17.05.1989 | Communication of intention to grant the patent | 08.08.1989 | Fee for grant paid | 08.08.1989 | Fee for publishing/printing paid | Opposition(s) | Opponent(s) | 01
22.08.1990
17.10.1990
ADMISSIBLE RADEX- HERAKLITH Industriebeteiligungs AG Opernring 1 A-1010 Wien 1 / AT Opponent's representative Becker, Thomas, et al, et al Patentanwälte Becker & Müller Turmstrasse 22 40878 Ratingen / DE | [N/P] |
| Former [1986/09] | |||
| Opponent(s) | 01
22.08.1990
17.10.1990
ADMISSIBLE RADEX- HERAKLITH Industriebeteiligungs AG Opernring 1 A-1010 Wien 1 / AT Opponent's representative Becker, Thomas, et al, et al Patentanwälte Becker & Müller Eisenhüttenstrasse 2 40882 Ratingen / DE | ||
| Former [1990/42] | |||
| Opponent(s) | 01
22.08.1990
17.10.1990
ADMISSIBLE RADEX- HERAKLITH Industriebeteiligungs AG Opernring 1 AT-1010 Wien 1 / AT Opponent's representative Becker, Thomas, Dr., Dipl.-Ing., et al, et al Patentanwälte Becker & Müller Eisenhüttenstrasse 2 D-40882 Ratingen / DE | 29.10.1990 | Invitation to proprietor to file observations on the notice of opposition | 13.11.1990 | Reply of patent proprietor to notice(s) of opposition | 20.11.1990 | Communication of observations of patent proprietor (Time limit: M02) | 22.12.1990 | Reply of parties involved to observations of patent proprietor | 15.04.1991 | Despatch of communication that the patent will be revoked | 25.04.1991 | Legal effect of revocation of patent [1991/40] | Fees paid | Renewal fee | 20.07.1987 | Renewal fee patent year 03 | 21.07.1988 | Renewal fee patent year 04 | 14.08.1989 | Renewal fee patent year 05 |
| Opt-out from the exclusive Tooltip competence of the Unified Patent Court | See the Register of the Unified Patent Court for opt-out data | ||
| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Lapses during opposition Tooltip | deleted | [2015/21] |
| Former [1992/06] | CH | 23.11.1989 | |
| LI | 23.11.1989 | Documents cited: | Search | [AD]US3365317 (YAVORSKY PAUL J); | [AD]US3620781 (GARVIE RONALD C); | [AD]US3887387 (STURHAHN HANS); | [AD]US4035191 (JOHNS HERBERT L); | [AD]US4067745 (GARVIE RONALD CHARLES, et al); | [A]EP0013599 (COMMW SCIENT IND RES ORG [AU]); | [A]EP0114653 (FELDMUEHLE AG [DE]) |