Patent US3239564A successfully refreshed from Google Patents.
US3239564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2 n-substituted amino halobenzo-phenones
Assignee: Individual
•
Filing: 1961-11-20
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Granted: 1966-03-08
•
Expires: 1981-11-20
Abstract
No abstract record available.
Inventors
- 👤 Reeder Earl
- 👤 Sternbach Leo Henryk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:05
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
US2078538A
Cited
CH330674A
Cited
US2818433A
Cited
US2828341A
Cited
GB854956A
Cited
US2948753A
Cited
US2937202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |