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US2448818A
Expired / Lapsed
US
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Process of isolating low-methoxyl pectinic acids
Assignee: United States Department of Agriculture
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Filing: 1945-09-14
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Granted: 1948-09-07
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Expires: 1965-09-14
Abstract
No abstract record available.
Inventors
- 👤 Rolland M Mccready
- 👤 Harry S Owens
- 👤 William D Maclay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:39
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |