Patent US3636006A successfully refreshed from Google Patents.
US3636006A
Expired / Lapsed
US
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Water-insoluble anthraquinone derivatives
Assignee: BASF Schweiz AG
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Filing: 1967-10-02
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Granted: 1972-01-18
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Expires: 1987-10-02
Abstract
Abstract AMINOANTHRAQUINONE DERIVATIVES CONTAINING A N-CYANOMETHYLAMINO GROUP AND PRECESS FOR THEIR PREPARATION.
Inventors
- 👤 Jean-Frederick Guye-Vuilleme
- 👤 Otto Ruettner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:48
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/28
Claims Analysis
Total Claims: 0
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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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |