US3860576A
Expired / Lapsed
US
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N-substituted-tetra-azacyclotetradecanes
Assignee: Dow Chemical Co
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Filing: 1972-04-26
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Granted: 1975-01-14
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Expires: 1992-04-26
Abstract
Abstract N-substituted tetraazacyclotetradecanes having one or more substitutents on the nitrogen atoms are provided. They are useful as accelerators for epoxy resins and catalysts for polyurethanes.
Inventors
- 👤 George E Ham
- 👤 Don J Temer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:37
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/20; C08G18/2009; C08G18/2036; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/68; C08G59/686
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
5 words
A compound of the formula
Claim 2
Dependent Claim
5 words
A compound of the formula
Claim 3
Dependent Claim
5 words
A compound of the formula
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |