Patent US913426A successfully refreshed from Google Patents.
US913426A
Expired / Lapsed
US
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Process of converting catechin into a catechu-tannic acid.
Assignee: Individual
•
Filing: 1906-08-09
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Granted: 1909-02-23
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Expires: 1926-08-09
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Osborne
- 👤 Heinrich Schupp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:25
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70
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) | 1912-02-23 | 1912-08-24 | 1913-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-02-23 | 1916-08-24 | 1917-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-02-23 | 1920-08-24 | 1921-02-23 | $7700.00 | Window Closed / Lapsed |