US2744884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-tert-alkylaminoalkyl esters
Assignee: Rohm and Haas Co
•
Filing: 1954-07-20
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Granted: 1956-05-08
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Expires: 1974-07-20
Abstract
No abstract record available.
Inventors
- 👤 Benneville Peter L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:00
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; A; A01; A01N; A01N37/00; A01N37/12; C10; C10M; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
7 words
COPOLYMERS OF A COMPOUND OF THE STRUCTURE
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) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |