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US3242181A
Expired / Lapsed
US
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Anthraquinone dyes with halogenpyridazone radicals
Assignee: BASF SE
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Filing: 1963-08-22
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Granted: 1966-03-22
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Expires: 1983-08-22
Abstract
No abstract record available.
Inventors
- 👤 Hensel Hans Ruprecht
- 👤 Baumann Hans
- 👤 Tartter Arnold
- 👤 Weissauer Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:04
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
AN ANTHRAQUINONE DYE OF THE FORMULA:
Claim 2
Dependent Claim
6 words
AN ANTHRAQUINONE DYE OF THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |