US3022304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthraquinone vat dyestuff containing a reactive triazing nucleus
Assignee: BASF Schweiz AG
•
Filing: 1959-05-25
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Granted: 1962-02-20
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Expires: 1979-05-25
Abstract
No abstract record available.
Inventors
- 👤 Staeuble Max
- 👤 Weber Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:24
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/44; C09B62/4401; C09B62/4403; C09B62/4409; C09B5/00; C09B5/24; C09B5/26; C09B5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB449477A
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US2373826A
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US2671786A
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US2671785A
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US2773871A
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US2889323A
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GB802935A
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US2951842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |