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EP0160497
European procedure
Extract from the Register of European Patents
EP About this file: EP0160497
| EP0160497 - High-performance electret and air filter [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 05.07.1990 Database last updated on 06.07.2024 | Most recent event Tooltip | 05.07.1990 | No opposition filed within time limit | published on 22.08.1990 [1990/34] | Applicant(s) | For all designated states MITSUI PETROCHEMICAL INDUSTRIES, LTD. 2-5, Kasumigaseki 3-chome Chiyoda-ku Tokyo 100 / JP | [N/P] |
| Former [1985/45] | For all designated states MITSUI PETROCHEMICAL INDUSTRIES, LTD. 2-5, Kasumigaseki 3-chome Chiyoda-ku Tokyo 100 / JP | Inventor(s) | 01 /
Inoue, Naofumi 44-7, 2-chome Yamate-cho Iwakuni-shi Yamaguchi-ken / JP | 02 /
Matsuura, Satoshi 3-4, Misono 1-chome Otake-shi Hiroshima-ken / JP | [1985/45] | Representative(s) | Goldin, Douglas Michael, et al J.A. KEMP & CO. 14 South Square Gray's Inn London WC1R 5JJ / GB | [N/P] |
| Former [1985/45] | Goldin, Douglas Michael, et al J.A. KEMP & CO. 14, South Square Gray's Inn London WC1R 5LX / GB | Application number, filing date | 85302835.5 | 23.04.1985 | [1985/45] | Priority number, date | JP19840081033 | 24.04.1984 Original published format: JP 8103384 | [1985/45] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0160497 | Date: | 06.11.1985 | Language: | EN | [1985/45] | Type: | A3 Search report | No.: | EP0160497 | Date: | 21.01.1987 | Language: | EN | [1987/04] | Type: | B1 Patent specification | No.: | EP0160497 | Date: | 13.09.1989 | Language: | EN | [1989/37] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 05.12.1986 | Classification | IPC: | H01G7/02, B03C3/28 | [1985/45] | CPC: |
B03C3/28 (EP,US);
B01D39/1623 (EP,US);
H01G7/023 (EP,US);
Y10S55/39 (EP,US)
| Designated contracting states | DE, GB, NL [1985/45] | Title | German: | Hochleistungselektret und Luftfilter | [1985/45] | English: | High-performance electret and air filter | [1985/45] | French: | Electrète à haute performance et filtre à air | [1985/45] | Examination procedure | 30.03.1987 | Examination requested [1987/22] | 13.10.1988 | Despatch of communication of intention to grant (Approval: Yes) | 24.02.1989 | Communication of intention to grant the patent | 12.05.1989 | Fee for grant paid | 12.05.1989 | Fee for publishing/printing paid | Opposition(s) | 13.06.1990 | No opposition filed within time limit [1990/34] | Fees paid | Renewal fee | 15.04.1987 | Renewal fee patent year 03 | 15.04.1988 | Renewal fee patent year 04 | 11.04.1989 | Renewal fee patent year 05 |
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| Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court. | Documents cited: | Search | [A]US3967027 (IGARASHI YURIKO, et al); | [A]US4069026 (SIMM WALTER, et al); | [XP]EP0122988 (MITSUI PETROCHEMICAL IND [JP]) | [A] - THIN SOLID FILMS, vol. 113, no. 3, March 1984, pages 251-256, Elsevier Sequoia, Lausanne, CH, printed in the Netherlands; I.M. TALWAR et al.: "Thermally stimulated discharge current studies of acrylic-acid-doped polystyrene films" |