US3655719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amino carbonate adducts and method of making same
Assignee: Signal Chemical Co
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Filing: 1969-10-22
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Granted: 1972-04-11
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Expires: 1989-10-22
Abstract
Abstract CARBONATE ADDUCTS ARE PREPARED BY REACTING A TERTIARY AMINE, A LOWER ALKANOL AND MIXTURES THEREOF, AND CARBON DIOXIDE AT A TEMPERATURE BELOW THAT AT WHICH DECOMPOSITION OF THE ADDUCT OCCURS.
Inventors
- 👤 John E Anderson
- 👤 Clyde E Parish
- 👤 George H Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:32
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08; C07C; C07C329/00
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |