US631608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anthraquinone derivative and process of making same.
Assignee: BASF SE
•
Filing: 1899-04-12
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Granted: 1899-08-22
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Expires: 1919-04-12
Abstract
No abstract record available.
Inventors
- 👤 Oscar Bally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:49
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) | 1902-08-22 | 1903-02-21 | 1903-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1906-08-22 | 1907-02-21 | 1907-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1910-08-22 | 1911-02-21 | 1911-08-23 | $7700.00 | Window Closed / Lapsed |