US2762811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acyclic polynitrile-containing, unsaturated compounds and prepartion thereof
Assignee: EIDP Inc
•
Filing: 1955-05-26
•
Granted: 1956-09-11
•
Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Middleton William Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:53
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE CALSS CONSISTING OF 1,1,2,4,5,5-HEXACYANO-3-AZAPENTADINE AND SALTS THEREOF.
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE CALSS CONSISTING OF 1,1,2,4,5,5-HEXACYANO-3-AZAPENTADINE AND SALTS THEREOF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |