US3400157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of bis(beta nu, nu-dimethyl-amino) alkyl] ethers
Assignee: Union Carbide Corp
•
Filing: 1964-11-27
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Granted: 1968-09-03
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Poppelsdorf Fedor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:05
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1833
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2951787A
Cited
US1005217A
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US2775617A
Cited
US2692286A
Cited
US2826582A
Cited
US2807614A
Cited
US2960535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |