US2462405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stilbene bis triazole azo dyestuffs
Assignee: Novartis AG
•
Filing: 1945-11-27
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Granted: 1949-02-22
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Expires: 1965-11-27
Abstract
No abstract record available.
Inventors
- 👤 Keller Ernst
- 👤 Zweidler Reinhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:45
CPC Classifications
C; C09; C09B; C09B56/00; C09B56/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2056539A
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US2029591A
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US2248151A
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US2232078A
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US2270451A
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US2385862A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |