Patent US3206454A successfully refreshed from Google Patents.
US3206454A
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Monoazo dyestuffs containing an aminosulfonyldialkylamino radical
Assignee: Sandoz AG
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Filing: 1963-06-12
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Granted: 1965-09-14
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Merian Ernest
- 👤 Bruno J R Nicolaus
- 👤 Senn Otto
- 👤 Wehrli Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:20
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08; C09B29/34; C09B29/36; C09B29/3604; C09B29/3647; C09B29/3652; C09B29/366; C09B31/00; C09B31/02; C09B31/06; C09B31/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
MONOAZO DYESTUFF OF LOW WATER-SOLUBILITY, OF THE FORMULA
Claim 2
Dependent Claim
8 words
MONOAZO DYESTUFF OF LOW WATER-SOLUBILITY, OF THE FORMULA
References Cited (Backward Citations)
US2909515A
Cited
US3050616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |