US2586995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyfurcate azonitriles
Assignee: EIDP Inc
•
Filing: 1948-01-15
•
Granted: 1952-02-26
•
Expires: 1968-01-15
Abstract
No abstract record available.
Inventors
- 👤 James A Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:47
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/63; C07C255/65
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
A POLYFURCATE AZONITRILE OF THE FORMULA
References Cited (Backward Citations)
US2109183A
Cited
US2297801A
Cited
US2380710A
Cited
US2391393A
Cited
US2492763A
Cited
US2469358A
Cited
US2471959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |