US3203990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-amino-2'-halo-5-nitro benzophenones
Assignee: CURACAO PHARMHOLDING NV
•
Filing: 1962-03-21
•
Granted: 1965-08-31
•
Expires: 1982-03-21
Abstract
No abstract record available.
Inventors
- 👤 Keller Oscar
- 👤 Steiger Norbert
- 👤 Sternbach Leo Henryk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:33
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/45; C07C225/00; C07C225/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2893992A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |