Patent US3152187A successfully refreshed from Google Patents.
US3152187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation product of unsaturated diols and polyalkylene polyamines and method of preparation thereof
Assignee: ConocoPhillips Co
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Filing: 1960-04-13
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Granted: 1964-10-06
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Expires: 1980-04-13
Abstract
No abstract record available.
Inventors
- 👤 Donald M Coyne
- 👤 Jr Olen L Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:12
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
THE CONDENSATION PRODUCT FORMED BY THE REACTION OF ABOUT ONE MOLE EQUIVALENT OF AN UNSATURATED DIOL OF THE FORMULA
Claim 2
Dependent Claim
19 words
THE CONDENSATION PRODUCT FORMED BY THE REACTION OF ABOUT ONE MOLE EQUIVALENT OF AN UNSATURATED DIOL OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-06 | 1968-04-06 | 1968-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-06 | 1972-04-06 | 1972-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-06 | 1976-04-06 | 1976-10-06 | $7700.00 | Window Closed / Lapsed |