US2739949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymers of dialkyl methallyliminodialkanoates
Assignee: EIDP Inc
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Filing: 1952-05-15
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Granted: 1956-03-27
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Expires: 1972-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jr William O Forshey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:04
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/02; C08F220/00; C08F220/02; C08F220/42; C08F220/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A POLYMER OF A TERTIARY AMINE WHICH HAS BUT ONE CARBON TO CARBON UNSATURATION AND WHEREIN ONE VALENCE OF THE AMINO NITROGEN IS BONDED TO A THREE TO FOUR CARBON, THREE CHAIN CARBON, MONOVALENT ALIPHATIC HYDROCARBON RADICAL HAVING ONE UNSATURATION AND THAT OF A VINYLIDENE GROUP BONDED, THROUGH ONE METHYLENE GROUPS, TO THE NITROGEN WHICH HAS AT LEAST ONE OTHER VALENCE BONDED, THROUGH A CHAIN CONTAINING ONE TO FOUR CARBONS TO AT LEAST ONE CARBOXYL GROUP ESTERIFIED WITH A LOWER ALKANOL, ANY REMAINING VALENCE OF THE NITROGEN BEING SATISFIED BY A LOWER ALKYL GROUP.
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) | 1959-03-27 | 1959-09-26 | 1960-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-27 | 1963-09-26 | 1964-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-27 | 1967-09-26 | 1968-03-27 | $7700.00 | Window Closed / Lapsed |