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US2423074A
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Soluble compounds of riboflavin and process of manufacture thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1945-08-02
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Granted: 1947-06-24
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Expires: 1965-08-02
Abstract
No abstract record available.
Inventors
- 👤 Zentner Margaret Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:11
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495; A61K31/505; A61K31/519; A61K31/525
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2349986A
Cited
US2395378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-23 | 1950-12-23 | 1951-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-23 | 1954-12-23 | 1955-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-23 | 1958-12-23 | 1959-06-24 | $7700.00 | Window Closed / Lapsed |