US3755395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetylenic derivatives of zinc
Assignee: Rhone Poulenc SA
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Filing: 1971-09-14
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Granted: 1973-08-28
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Expires: 1991-09-14
Abstract
Abstract SOLUTIONS OF ORGANO-ZINC COMPOUNDS OF THE FORMULAE: X-ZN-C$CH AND X-ZN-C$C-NZ-X WHERE X IS HALOGEN, MADE BY REACTION OF AN ALKYL ZINC HALIDE WITH ACETYLENE, ARE USED FOR MAKING ACETYLENIC ORGANO-SILICON COMPOUNDS BY REACTION WITH COMPOUNDS CONTAINING SILICON-CHLORINE BONDS.
Inventors
- 👤 G Bakassian
- 👤 M Lefort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:14
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0896; C07F3/00; C07F3/06; C07F7/0801
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |