US3491126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonated 1-alkylamino-4-tolylaminoanthraquinones
Assignee: Novartis AG
•
Filing: 1965-12-17
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Granted: 1970-01-20
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Expires: 1985-12-17
Abstract
No abstract record available.
Inventors
- 👤 Hans Rudolf Schwander
- 👤 Anton Zenhausern
- 👤 Peter Hindermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:21
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; C09B1/34; C09B1/346; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US687658A
Cited
US2166353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-19 | 1973-07-21 | 1974-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-19 | 1977-07-21 | 1978-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-19 | 1981-07-21 | 1982-01-20 | $7700.00 | Window Closed / Lapsed |