US2552814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanoesters
Assignee: Armour and Co
•
Filing: 1944-06-02
•
Granted: 1951-05-15
•
Expires: 1964-06-02
Abstract
No abstract record available.
Inventors
- 👤 Anderson W Ralston
- 👤 Lowell T Crews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:14
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08K; C08K5/00; C08K5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A ESTER OF ETHYLENE CYANOHYDRINE AND A FATTY ACID HAVING AT LEAST 12 CARBON ATOMS.
Claim 2
Dependent Claim
15 words
A ESTER OF ETHYLENE CYANOHYDRINE AND A FATTY ACID HAVING AT LEAST 12 CARBON ATOMS.
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) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |