Patent US3046283A successfully refreshed from Google Patents.
US3046283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
10-(omega-aminoalkylidene)-thioxanthenes
Assignee: Merck and Co Inc
•
Filing: 1957-08-19
•
Granted: 1962-07-24
•
Expires: 1977-08-19
Abstract
No abstract record available.
Inventors
- 👤 Edward L Engelhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:54
CPC Classifications
C; C07; C07D; C07D335/00; C07D335/04; C07D335/10; C07D335/12; C07D335/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF THOSE HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
COMPOUNDS SELECTED FROM THE CLASS CONSISTING OF THOSE HAVING THE FORMULA
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) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |