Patent US3320233A successfully refreshed from Google Patents.
US3320233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-maino-2-anthraquinoneazo dyestuffs
Assignee: BASF SE
•
Filing: 1964-12-16
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Granted: 1967-05-16
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Braun Willy
- 👤 Paetzke Ingo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:14
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/11; C09B43/08; C09B43/40
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)
US1788314A
Cited
US2221029A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |