Patent US2801955A successfully refreshed from Google Patents.
US2801955A
Expired / Lapsed
US
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Process for extraction of hemicellulose
Assignee: NAT STARCH PRODUCTS Inc
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Filing: 1955-11-17
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Granted: 1957-08-06
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Expires: 1975-11-17
Abstract
No abstract record available.
Inventors
- 👤 Morton W Rutenberg
- 👤 Herbst William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:15
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0057
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE METHOD OF EXTRACTING HEMICELLULOSE FROM CORN BRAN WHICH CONSISTS IN TREATING THE CORN BRAN WITH ALKALI SELECTED FROM THE CLASS CONSISTING OF SODIUM, POTTASSIUM, AMMONIUM AND CALCIUM HYDROXIDES,, THE TREATMENT COMPRISING MIXING THE CORN BRAN IN THE PRESENCE OF WATER WITH SAID ALKALI AND MAINTAINING THE MIXTURE AT A TEMPERATURE WITHIN THE RANGE ROOM TEMPERATURE TO 190* C., AT LEAST 23% OF SAID ALKALI COMPRISING CALCIUM HYDROXIDE, THE TOTAL ALKALI BEING IN AN AMOUNT TO PROVIDE A PH WITHIN THE RANGE OF 10-12.5 AT THE BEGINNING OF THE EXTRACTION REACTION, AND THEN SEPARATING THE RESULTING HEMICELLULOSE EXTRACT FROM THE RESIDUAL SOLIDS.
Claim 2
Independent Claim
102 words
THE METHOD OF EXTRACTING HEMICELLULOSE FROM CORN BRAN WHICH CONSISTS IN TREATING THE CORN BRAN WITH ALKALI SELECTED FROM THE CLASS CONSISTING OF SODIUM, POTTASSIUM, AMMONIUM AND CALCIUM HYDROXIDES,, THE TREATMENT COMPRISING MIXING THE CORN BRAN IN THE PRESENCE OF WATER WITH SAID ALKALI AND MAINTAINING THE MIXTURE AT A TEMPERATURE WITHIN THE RANGE ROOM TEMPERATURE TO 190* C., AT LEAST 23% OF SAID ALKALI COMPRISING CALCIUM HYDROXIDE, THE TOTAL ALKALI BEING IN AN AMOUNT TO PROVIDE A PH WITHIN THE RANGE OF 10-12.5 AT THE BEGINNING OF THE EXTRACTION REACTION, AND THEN SEPARATING THE RESULTING HEMICELLULOSE EXTRACT FROM THE RESIDUAL SOLIDS.
References Cited (Backward Citations)
US1819233A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |