US823435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating organic substances in presence of vanadium compounds.
Assignee: Hoechst AG
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Filing: 1904-08-31
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Granted: 1906-06-12
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Expires: 1924-08-31
Abstract
No abstract record available.
Inventors
- 👤 Erich Oppermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
C; C25; C25B; C25B3/00; C25B3/01; C25B3/09
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) | 1909-06-11 | 1909-12-11 | 1910-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1913-06-11 | 1913-12-11 | 1914-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1917-06-11 | 1917-12-11 | 1918-06-12 | $7700.00 | Window Closed / Lapsed |