US3778459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silyl maleates and polysiloxane maleates
Assignee: General Electric Co
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Filing: 1972-12-18
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Granted: 1973-12-11
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Expires: 1992-12-18
Abstract
Abstract SILYL MALEATES AND FUMARATES AND POLYSILOXANE MALEATES AND FUMARATES USEFUL AS GLASS SIZING AGENTS ARE PREPARED IN ACCORDANCE WITH THE PRESENT INVENTION. THE SILYL MALEATES AND POLYSILOXANE MALEATES AND FUMARTES ARE FOMRED BY REACTING EITHER THE CIS-OR TRANS-1,2-BISCARBALKOXYETHYLENES HAVING AN UNSATURATED ALKYNYL GROUP THEREIN WITH A HYDROGEN SILANE OR HYDROGEN POLYSILOXANE IN THE PRESENCE OF A PLATINUM CATALYST.
Inventors
- 👤 A Berger
- 👤 T Selin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:38
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/18; C07F7/1804; C08; C08G; C08G77/00; C08G77/04; C08G77/38
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |