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EP0437912
European procedure
Extract from the Register of European Patents
EP About this file: EP0437912
| EP0437912 - Method for producing dual zone materials by use of an organosilane mixture [Right-click to bookmark this link] | Status | No opposition filed within time limit Status updated on 22.09.1994 Database last updated on 06.11.2024 | Most recent event Tooltip | 22.09.1994 | No opposition filed within time limit | published on 09.11.1994 [1994/45] | Applicant(s) | For all designated states Dow Corning Corporation 3901 S. Saginaw Road Midland, Michigan 48686-0994 / US | [N/P] |
| Former [1992/45] | For all designated states DOW CORNING CORPORATION 3901 S. Saginaw Road Midland Michigan 48686-0994 / US | ||
| Former [1991/30] | For all designated states DOW CORNING CORPORATION Midland, Michigan 48686-0994 / US | Inventor(s) | 01 /
Williams, Dwight Edward 2010 Wilmington Drive Midland, Michigan / US | 02 /
Tangney, Thomas John 2528 Brookwood Midland, Michigan / US | [1991/30] | Representative(s) | Laredo, Jack Joseph, et al Elkington and Fife, Prospect House, 8 Pembroke Road Sevenoaks Kent TN13 1XR / GB | [N/P] |
| Former [1991/30] | Laredo, Jack Joseph, et al Elkington and Fife Prospect House 8 Pembroke Road Sevenoaks, Kent TN13 1XR / GB | Application number, filing date | 90300580.9 | 19.01.1990 | [1991/30] | Filing language | EN | Procedural language | EN | Publication | Type: | A1 Application with search report | No.: | EP0437912 | Date: | 24.07.1991 | Language: | EN | [1991/30] | Type: | B1 Patent specification | No.: | EP0437912 | Date: | 18.11.1993 | Language: | EN | [1993/46] | Search report(s) | (Supplementary) European search report - dispatched on: | EP | 13.09.1990 | Classification | IPC: | B01J20/32, B01D15/08 | [1991/30] | CPC: |
B01D15/08 (EP,US);
B01J20/3204 (EP,US);
B01J20/3257 (EP,US);
B01J20/3259 (EP,US);
B01J20/3261 (EP,US);
B01J20/3263 (EP,US);
| Designated contracting states | DE, FR, GB [1991/30] | Title | German: | Methode zur Herstellung von Dualzonen-Materialien durch Verwendung einer Mischung von Organosilanen | [1991/30] | English: | Method for producing dual zone materials by use of an organosilane mixture | [1991/30] | French: | Méthode de préparation de matériaux à zone duale par utilisation d'un mélange d'organosilanes | [1991/30] | Examination procedure | 21.12.1990 | Examination requested [1991/30] | 18.11.1991 | Despatch of a communication from the examining division (Time limit: M06) | 15.05.1992 | Reply to a communication from the examining division | 27.01.1993 | Despatch of communication of intention to grant (Approval: No) | 05.05.1993 | Despatch of communication of intention to grant (Approval: later approval) | 13.05.1993 | Communication of intention to grant the patent | 06.07.1993 | Fee for grant paid | 06.07.1993 | Fee for publishing/printing paid | Opposition(s) | 19.08.1994 | No opposition filed within time limit [1994/45] | Fees paid | Renewal fee | 17.01.1992 | Renewal fee patent year 03 | 08.12.1992 | Renewal fee patent year 04 |
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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]EP0161058 (DOW CORNING [US]); | [AD]EP0158500 (DOW CORNING [US]) | [A] - JOURNAL OF CHROMATOGRAPHY, vol. 438, no. 2, 22nd April 1988, pages 263-271, Elsevier Science Publishers B.V., Amsterdam, NL; A. CHARTIER et al.: "Mixed bonded phases for high-performance liquid chromatography" | [AD] - ANAL. CHEMISTRY, vol. 58, 1986, pages 748-752, American Chemical Society; M.L. HUNNICUTT et al.: "Reactivity of organosilane reagents on microparticulate silica" |