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Patent US2232699A successfully refreshed from Google Patents.
US2232699A
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Process for stabilizing solutions containing ascorbic acid and the products thereof
Assignee: Merck and Co Inc
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Filing: 1936-11-10
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Granted: 1941-02-25
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Expires: 1956-11-10
Abstract
No abstract record available.
Inventors
- 👤 William H Engels
- 👤 Weijlard John
- 👤 Remsen T Schenck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:55
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/335; A61K31/365; A61K31/375; A23; A23L; A23L33/00; A23L33/10; A23L33/15; A23V; A23V2002/00
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) | 1944-02-25 | 1944-08-26 | 1945-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-25 | 1948-08-26 | 1949-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-25 | 1952-08-26 | 1953-02-25 | $7700.00 | Window Closed / Lapsed |