Patent US3134766A successfully refreshed from Google Patents.
US3134766A
Expired / Lapsed
US
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Azo dyestuffs of low water-solubility
Assignee: Sandoz AG
•
Filing: 1960-08-11
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Granted: 1964-05-26
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Expires: 1980-08-11
Abstract
No abstract record available.
Inventors
- 👤 Merian Ernest
- 👤 Bruno J R Nicolaus
- 👤 Senn Otto
- 👤 Wchrli Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:07
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; C09B31/06; C09B31/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2909515A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |