US2578788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of beta-tertiary aminoacrylic esters from alkoxyacrylic esters
Assignee: Rohm and Haas Co
•
Filing: 1949-05-13
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Granted: 1951-12-18
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Expires: 1969-05-13
Abstract
No abstract record available.
Inventors
- 👤 Benneville Peter L De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:21
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A METHOD FOR PREPARING TERTIARY B-AMINOACRYLATES OF THE FORMULA
Claim 2
Independent Claim
9 words
A METHOD FOR PREPARING TERTIARY B-AMINOACRYLATES OF THE FORMULA
References Cited (Backward Citations)
US2425693A
Cited
US2439359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |