US3154533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New azo dyestuffs
Assignee: BASF SE
•
Filing: 1959-05-22
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Granted: 1964-10-27
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Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 Eisele Julius
- 👤 Federkiel Wilhelm
- 👤 Schuster Curt
- 👤 Gehm Robert
- 👤 Tartter Arnold
- 👤 Graser Fritz
- 👤 Rohland Werner
- 👤 Stoeckl Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:23
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/523; C09B62/527; C09B62/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A WATER-SOLUBLE MONOAZO DYESTUFF SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULAE
Claim 2
Dependent Claim
14 words
A WATER-SOLUBLE MONOAZO DYESTUFF SELECTED FROM THE CLASS CONSISTING OF COMPOUNDS OF THE FORMULAE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-27 | 1968-04-27 | 1968-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-27 | 1972-04-27 | 1972-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-27 | 1976-04-27 | 1976-10-27 | $7700.00 | Window Closed / Lapsed |