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Patent US3086972A successfully refreshed from Google Patents.
US3086972A
Expired / Lapsed
US
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Aza-thiaxanthene derivatives
Assignee: Sandoz AG
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Filing: 1961-03-17
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Granted: 1963-04-23
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Expires: 1981-03-17
Abstract
No abstract record available.
Inventors
- 👤 Jucker Ernst
- 👤 Ebnother Anton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:16
CPC Classifications
C; C07; C07D; C07D495/00; C07D495/02; C07D495/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A MEMBER OF THE CLASS CONSISTING OF 1-AZA-THIAXANTHENES OF THE FORMULA
Claim 2
Dependent Claim
11 words
A MEMBER OF THE CLASS CONSISTING OF 1-AZA-THIAXANTHENES OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-22 | 1966-10-22 | 1967-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-22 | 1970-10-22 | 1971-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-22 | 1974-10-22 | 1975-04-23 | $7700.00 | Window Closed / Lapsed |