US2530451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenothiazines
Assignee: —
•
Filing: —
•
Granted: 1950-11-21
•
Expires: 1967-11-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:24
CPC Classifications
C; C07; C07D; C07D279/00; C07D279/10; C07D279/14; C07D279/18; C07D279/22; C07D279/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
THE NEW COMPOUNDS OF THE CLASS CONSISTING OF N-(2''-DIMETHYLAMINO-2''-METHYLETHYL) PHENOTHIAZINE OF THE FORMULA:
Claim 2
Dependent Claim
13 words
THE NEW COMPOUNDS OF THE CLASS CONSISTING OF N-(2''-DIMETHYLAMINO-2''-METHYLETHYL) PHENOTHIAZINE OF THE FORMULA:
References Cited (Backward Citations)
US2406594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |