US2595215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenothiazine derivatives and proc
Assignee: —
•
Filing: —
•
Granted: 1952-05-06
•
Expires: 1969-05-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:23
CPC Classifications
C; C07; C07D; C07D279/00; C07D279/10; C07D279/14; C07D279/18; C07D279/22; C07D279/24; C07D279/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
PHENOTHIAZINE DERIVATIVES CONFORMING TO THE GENERAL FORMUAL:
Claim 2
Dependent Claim
7 words
PHENOTHIAZINE DERIVATIVES CONFORMING TO THE GENERAL FORMUAL:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-06 | 1955-11-05 | 1956-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-06 | 1959-11-05 | 1960-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-06 | 1963-11-05 | 1964-05-06 | $7700.00 | Window Closed / Lapsed |