US3382261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic polyamino-amides capable of curing epoxy resins
Assignee: 3M Co
•
Filing: 1966-01-03
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Granted: 1968-05-07
•
Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 John B Kittredge
- 👤 Albert L Micchelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:16
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/54; C08G59/62; C08G59/621; C08G59/623; C08G59/625; C08G73/00; C08G73/02; C08G73/0206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
AS A COMPOSITION CAPABLE OF CROSSLINKING EPOXY RESINS, A PHENOLIC POLYAMINE HAVING THE FORMULA R1CONH(CH2CHNH)XH WHERE X IS 2 TO ABOUT 15 AND R1 IS A STRAIGHT CHAIN ALIPHALIC HYDROCARBON RADICAL HAVING AT LEAST TWO CARBON ATOMS AND HAVING A PHENOLIC SUBSTITUENT OF THE FORMULA
Claim 2
Dependent Claim
45 words
AS A COMPOSITION CAPABLE OF CROSSLINKING EPOXY RESINS, A PHENOLIC POLYAMINE HAVING THE FORMULA R1CONH(CH2CHNH)XH WHERE X IS 2 TO ABOUT 15 AND R1 IS A STRAIGHT CHAIN ALIPHALIC HYDROCARBON RADICAL HAVING AT LEAST TWO CARBON ATOMS AND HAVING A PHENOLIC SUBSTITUENT 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) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |