Patent US2600925A successfully refreshed from Google Patents.
US2821501A
Expired / Lapsed
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Recovery of starch
Assignee: National Research Council Canada
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Filing: 1953-12-08
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Granted: 1958-01-28
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Expires: 1973-12-08
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:39
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/14; C08; C08B; C08B30/00; C08B30/04; C08B30/042; C08B30/046; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/836; Y10S435/838; Y10S435/839
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
THE EXTRACTION OF STARCH FROM WHEAT CONTAINING PENTOSAN GUM, THE STEP OF DEGRADING SAID GUM BUT NOT THE STARCH ITSELF WITH A PENTASSANASE ENZYME.
Claim 2
Dependent Claim
24 words
THE EXTRACTION OF STARCH FROM WHEAT CONTAINING PENTOSAN GUM, THE STEP OF DEGRADING SAID GUM BUT NOT THE STARCH ITSELF WITH A PENTASSANASE ENZYME.
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) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |