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US3287347A
Expired / Lapsed
US
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Water-insoluble nitrothiazole azo dyes
Assignee: BASF SE
•
Filing: 1964-10-20
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Granted: 1966-11-22
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Expires: 1984-10-20
Abstract
No abstract record available.
Inventors
- 👤 Hahn Erwin
- 👤 Wippel Hans Guenter
- 👤 Lange Guenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:47
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B43/124; C09B43/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A DYE OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A DYE OF THE FORMULA:
References Cited (Backward Citations)
US2683709A
Cited
GB894012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |