Patent US3055903A successfully refreshed from Google Patents.
US3055903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-alkyl mercapto-9-(n-alkyl-piperidylidene-4'-thioxanthenes and the acetate salts thereof
Assignee: Sandoz AG
•
Filing: 1961-02-08
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Granted: 1962-09-25
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 Renz Jany
- 👤 Griot Rudolf
- 👤 Schwarb Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:18
CPC Classifications
C; C07; C07D; C07D409/00; C07D409/02; C07D409/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A THIAXANTHENE OF THE FORMULA,
Claim 2
Dependent Claim
5 words
A THIAXANTHENE OF 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) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |