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EP0622949
European procedure
Extract from the Register of European Patents
EP About this file: EP0622949
| EP0622949 - Inverse halftoning using linear filtering and statistical smoothing [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 28.05.1999 Database last updated on 29.07.2024 | Most recent event Tooltip | 28.05.1999 | No opposition filed within time limit | published on 14.07.1999 [1999/28] | Applicant(s) | For all designated states Hewlett-Packard Company 3000 Hanover Street Palo Alto, CA 94304-1112 / US | [N/P] |
| Former [1994/44] | For all designated states Hewlett-Packard Company 3000 Hanover Street Palo Alto, California 94304 / US | Inventor(s) | 01 /
Wong, Ping W. 1443 Knowlton Drive Sunnyvale, CA 94087 / US | [1994/44] | Representative(s) | Powell, Stephen David, et al Williams Powell 44 Prospect Place Bromley, Kent BR2 9HN / GB | [N/P] |
| Former [1994/44] | Powell, Stephen David, et al WILLIAMS, POWELL & ASSOCIATES 34 Tavistock Street London WC2E 7PB / GB | Application number, filing date | 94302654.2 | 14.04.1994 | [1994/44] | Priority number, date | US19930053643 | 27.04.1993 Original published format: US 53643 | [1994/44] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0622949 | Date: | 02.11.1994 | Language: | EN | [1994/44] | Type: | B1 Patent specification | No.: | EP0622949 | Date: | 22.07.1998 | Language: | EN | [1998/30] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 02.08.1994 | Classification | IPC: | H04N1/40 | [1994/44] | CPC: |
H04N1/40075 (EP,US)
| Designated contracting states | DE, FR, GB [1994/44] | Title | German: | Umgekehrte Halbtonrasterung durch lineare Filterung und statistische Glättung | [1994/44] | English: | Inverse halftoning using linear filtering and statistical smoothing | [1994/44] | French: | Obtention de demi teinte inversées par un filtrage linéaire et un lissage statistique | [1994/44] | Examination procedure | 24.01.1995 | Examination requested [1995/12] | 08.10.1997 | Despatch of communication of intention to grant (Approval: Yes) | 20.01.1998 | Communication of intention to grant the patent | 09.03.1998 | Fee for grant paid | 09.03.1998 | Fee for publishing/printing paid | Opposition(s) | 23.04.1999 | No opposition filed within time limit [1999/28] | Fees paid | Renewal fee | 25.03.1996 | Renewal fee patent year 03 | 24.03.1997 | Renewal fee patent year 04 | 26.03.1998 | 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 | [AP]EP0562813 (XEROX CORP [US]) [AP] 1 * abstract *; | [A] - HEIN S ; ZAKHOR A, "Reconstruction of continuous tone images from their error diffused halftone version", HUMAN VISION, VISUAL PROCESSING, AND DIGITAL DISPLAY IV, PROCEEDINGS OF THE SPIE, SAN JOSE, CA, USA, (199302), vol. 1913, pages 310 - 324, XP000443957 [A] 1 * the whole document * |