US2811451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing extracts from seaweeds of the eucheuma family
Assignee: Individual
•
Filing: 1953-11-30
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Granted: 1957-10-29
•
Expires: 1973-11-30
Abstract
No abstract record available.
Inventors
- 👤 Tjoa Sie Lian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:18
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0036; C08B37/0003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
THE PROCESS OF PREPARING EXTRACTS FROM SEAWEED OF THE EUCHEUMA FAMILY COMPRISING THE STEPS OF EXTERNALLY RINSING THE SEAWEED, IMMERSING THE SEAWEED IN A SALT SOLUTION TO INCREASE DIFFUSION, WASHING OFF THE ADHERING SALT FROM THE IMMERSED SEAWEED FOLLOWED BY EXTRACTING REPEATEDLY WITH WATER AT TEMPERATURES OF FROM APPROXIMATELY 30* TO 100*C., SUBSEQUENTLY SEPARATING THE EXTRACTS FROM THE SEAWEED MASSS, AND THEN CONCENTRATING THE EXTRACTS BY EVAPORATION.
Claim 2
Dependent Claim
67 words
THE PROCESS OF PREPARING EXTRACTS FROM SEAWEED OF THE EUCHEUMA FAMILY COMPRISING THE STEPS OF EXTERNALLY RINSING THE SEAWEED, IMMERSING THE SEAWEED IN A SALT SOLUTION TO INCREASE DIFFUSION, WASHING OFF THE ADHERING SALT FROM THE IMMERSED SEAWEED FOLLOWED BY EXTRACTING REPEATEDLY WITH WATER AT TEMPERATURES OF FROM APPROXIMATELY 30* TO 100*C., SUBSEQUENTLY SEPARATING THE EXTRACTS FROM THE SEAWEED MASSS, AND THEN CONCENTRATING THE EXTRACTS BY EVAPORATION.
References Cited (Backward Citations)
GB189813289A
Cited
US2446091A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |