Patent US2442804A successfully refreshed from Google Patents.
US2442804A
Expired / Lapsed
US
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Purification of sirups by solvent extraction
Assignee: Individual
•
Filing: 1944-06-21
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Granted: 1948-06-08
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Expires: 1964-06-21
Abstract
No abstract record available.
Inventors
- 👤 Peter J Gaylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:07
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003965A
Cited
US2022093A
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US2022824A
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US2130029A
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US2109503A
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US2280723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |