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EP0165767
European procedure
Extract from the Register of European Patents
EP About this file: EP0165767
| EP0165767 - Polariscope having liquid crystal cells [Right-click to bookmark this link] | |||
| Former [1985/52] | Liquid crystal apparatus and method | ||
| [1990/21] | Status | No opposition filed within time limit Status updated on 21.03.1991 Database last updated on 26.04.2025 | Most recent event Tooltip | 21.03.1991 | No opposition filed within time limit | published on 08.05.1991 [1991/19] | Applicant(s) | For all designated states NATIONAL RESEARCH DEVELOPMENT CORPORATION 101 Newington Causeway London SE1 6BU / GB | [1985/52] | Inventor(s) | 01 /
Hearn, Edwin John Fairhaven, 15A Rea Avenue Rubery Birmingham B45 9SR / GB | 02 /
Walker, Neil 32 Winchester Avenue Nuneaton Warwickshire CV10 ODS / GB | 03 /
McDonnell, Damien Gerald Flat 10, Eatonhurst Barnards Green Malvern Worcestershire / GB | 04 /
Hughes, Anthony James 8 Birchwood Road Malvern Link Worcestershire WR14 1LD / GB | [1985/52] | Representative(s) | Cullis, Roger, et al Patents Department British Technology Group Ltd 10 Fleet Place Limeburner Lane London EC4M 7SB / GB | [N/P] |
| Former [1985/52] | Cullis, Roger, et al Patents Department British Technology Group Ltd 101 Newington Causeway London SE1 6BU / GB | Application number, filing date | 85304178.8 | 12.06.1985 | [1985/52] | Priority number, date | GB19840015129 | 14.06.1984 Original published format: GB 8415129 | [1985/52] | Filing language | EN | Procedural language | EN | Publication | Type: | A2 Application without search report | No.: | EP0165767 | Date: | 27.12.1985 | Language: | EN | [1985/52] | Type: | A3 Search report | No.: | EP0165767 | Date: | 27.08.1986 | Language: | EN | [1986/35] | Type: | B1 Patent specification | No.: | EP0165767 | Date: | 23.05.1990 | Language: | EN | [1990/21] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 07.07.1986 | Classification | IPC: | G02F1/13, G01L1/24, G01N21/23 | [1985/52] | CPC: |
G01L1/241 (EP);
G01N21/23 (EP);
G02F1/1313 (EP);
G01N2021/216 (EP)
| Designated contracting states | DE, FR [1985/52] | Title | German: | Polariskop mit Flüssigkristallzellen | [1990/21] | English: | Polariscope having liquid crystal cells | [1990/21] | French: | Polariscope utilisant des cellules à cristal liquide | [1990/21] |
| Former [1985/52] | Polariskop mit einer Flüssigkristallzelle | ||
| Former [1985/52] | Liquid crystal apparatus and method | ||
| Former [1985/52] | Polariscope utilisant une cellule à cristal liquide | File destroyed: | 15.01.2000 | Examination procedure | 19.05.1986 | Examination requested [1986/31] | 31.03.1987 | Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time | 06.09.1988 | Despatch of a communication from the examining division (Time limit: M04) | 05.01.1989 | Reply to a communication from the examining division | 16.03.1989 | Despatch of a communication from the examining division (Time limit: M04) | 16.06.1989 | Reply to a communication from the examining division | 19.10.1989 | Despatch of communication of intention to grant (Approval: Yes) | 17.11.1989 | Communication of intention to grant the patent | 21.02.1990 | Fee for grant paid | 21.02.1990 | Fee for publishing/printing paid | Opposition(s) | 26.02.1991 | No opposition filed within time limit [1991/19] | Request for further processing for: | 02.06.1987 | Request for further processing filed | 29.05.1987 | Full payment received (date of receipt of payment) Request granted | 20.07.1987 | Decision despatched | Fees paid | Renewal fee | 11.05.1987 | Renewal fee patent year 03 | 11.05.1988 | Renewal fee patent year 04 | 11.05.1989 | 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]JP58035425 ; | [A]EP0076651 (NAT RES DEV [GB]) | [A] - PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 113 (P-197) [1258], 18th May 1983; & JP-A-58 035 425 (CANON K.K.) 02-03-1983, & JP58035425 A 00000000 |