US3004028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phenothiazines
Assignee: —
•
Filing: —
•
Granted: 1961-10-10
•
Expires: 1978-10-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:25
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135; C07D295/125; C07D295/13; C07D241/00; C07D241/02; C07D241/04; C07D295/16; C07D295/18; C07D295/182; C07D295/185
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
18 words
A PROCESS FOR PREPARING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF FREE BASES OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2769002A
Cited
US2837518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |