US3202698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thio and oxy substituted aromatic hydrazones of carbonyl cyanide
Assignee: EIDP Inc
•
Filing: 1962-06-21
•
Granted: 1965-08-24
•
Expires: 1982-06-21
Abstract
No abstract record available.
Inventors
- 👤 William W Prichard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:14
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
AROMATIC HYDRAZONES OF CARBONYL CYANIDE OF THE FORMULA
Claim 2
Dependent Claim
8 words
AROMATIC HYDRAZONES OF CARBONYL CYANIDE OF THE FORMULA
References Cited (Backward Citations)
US2658889A
Cited
US3062635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |