US2031058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vat-dyestuffs of the anthraquinone series and process of making the same
Assignee: FIRM SOCIETY OF CHEMICAL INDUSTRY IN BASLE
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Filing: 1935-03-13
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Granted: 1936-02-18
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Expires: 1955-03-13
Abstract
No abstract record available.
Inventors
- 👤 Moser Wilhelm
- 👤 Fioroni Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:57
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/24; C09B5/34; C09B5/40
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) | 1939-02-17 | 1939-08-19 | 1940-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-02-17 | 1943-08-19 | 1944-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-02-17 | 1947-08-19 | 1948-02-18 | $7700.00 | Window Closed / Lapsed |