US658446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of obtaining vanillin derivatives.
Assignee: Vereinigte Chininfabriken Zimmer & Co GmbH
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Filing: 1897-12-29
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Granted: 1900-09-25
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Expires: 1917-12-29
Abstract
No abstract record available.
Inventors
- 👤 Andreas Christiansen Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:10
CPC Classifications
C; C07; C07C; C07C68/00; C07C68/06
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) | 1903-09-25 | 1904-03-26 | 1904-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-09-25 | 1908-03-26 | 1908-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-09-25 | 1912-03-26 | 1912-09-25 | $7700.00 | Window Closed / Lapsed |