US2669558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyano ether-esters
Assignee: Monsanto Chemicals Ltd
•
Filing: 1951-12-17
•
Granted: 1954-02-16
•
Expires: 1971-12-17
Abstract
No abstract record available.
Inventors
- 👤 David T Mowry
- 👤 Eugene L Ringwald
- 👤 George L Wesp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:37
CPC Classifications
C; C07; C07C; C07C255/00; A; A47; A47C; A47C31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A POLYMER OF A CYANO ETHER-ESTER HAVING THE FORMULA
Claim 2
Dependent Claim
9 words
A POLYMER OF A CYANO ETHER-ESTER HAVING 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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |