US2824096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tricyanovinylaryleneazoarylene compounds
Assignee: EIDP Inc
•
Filing: 1954-07-13
•
Granted: 1958-02-18
•
Expires: 1974-07-13
Abstract
No abstract record available.
Inventors
- 👤 Richard E Heckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:43
CPC Classifications
C; C09; C09B; C09B29/00; C09B56/00; C09B56/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
COMPOUND OF FORMULA
Claim 2
Dependent Claim
3 words
COMPOUND OF 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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |