Patent US2446091A successfully refreshed from Google Patents.
US2446091A
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Method of extracting gelose from seaweeds such as hypnea musciformis and other species of the genus hypnea
Assignee: Duke University
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Filing: 1945-08-06
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Granted: 1948-07-27
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Expires: 1965-08-06
Abstract
No abstract record available.
Inventors
- 👤 Humm Harold Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:10
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0036; C08B37/0039; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/946
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) | 1951-07-27 | 1952-01-26 | 1952-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-27 | 1956-01-26 | 1956-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-27 | 1960-01-26 | 1960-07-27 | $7700.00 | Window Closed / Lapsed |