US3535306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monoazo dyes of low solubility having a diphenylamine group
Assignee: Sandoz AG
•
Filing: 1967-06-02
•
Granted: 1970-10-20
•
Expires: 1987-06-02
Abstract
No abstract record available.
Inventors
- 👤 Ruedi Altermatt
- 👤 Heinz Wicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:34
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1590728A
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US1734246A
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US1905294A
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US2077322A
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US2117745A
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US2177427A
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US2289349A
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US2822395A
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US3153034A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |