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Patent US1210751A successfully refreshed from Google Patents.
US1210751A
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US
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Substantive orthooxyazo dyestuffs and a process of making same.
Assignee: BASF Schweiz AG
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Filing: 1915-10-08
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Granted: 1917-01-02
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Expires: 1935-10-08
Abstract
No abstract record available.
Inventors
- 👤 Eugen Anderwert
- 👤 Herman Fritzsche
- 👤 Heinrich Schobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:45
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B43/136; C09B43/14
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) | 1920-01-02 | 1920-07-03 | 1921-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-01-02 | 1924-07-03 | 1925-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-01-02 | 1928-07-03 | 1929-01-02 | $7700.00 | Window Closed / Lapsed |