US3455898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-insoluble monoazo dyes containing a 2,1-benzoisothiazolyn-(3) radical
Assignee: BASF SE
•
Filing: 1966-06-03
•
Granted: 1969-07-15
•
Expires: 1986-06-03
Abstract
No abstract record available.
Inventors
- 👤 Matthias Seefelder
- 👤 Herbert Ambrust
- 👤 Hans Guenter Wippel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:45
CPC Classifications
C; C09; C09B; C09B44/00; C09B44/10; C09B44/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2149051A
Cited
US2349899A
Cited
US2373700A
Cited
US2785157A
Cited
US2889315A
Cited
US2891942A
Cited
US3057848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |