US3101302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification and recovery of fungal amylases
Assignee: Unilever Bestfoods North America
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Filing: 1960-11-30
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Granted: 1963-08-20
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Expires: 1980-11-30
Abstract
No abstract record available.
Inventors
- 👤 George E Inglett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:19
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/24; C12N9/2402; C12N9/2405; C12N9/2408; C12N9/2411; C12N9/2414; C12N9/2417; C12N9/242; C12N9/2428; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/815; Y10S435/816; Y10S435/8215; Y10S435/911; Y10S435/913; Y10S435/917; Y10S435/918; Y10S435/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR THE PURIFICATION AND RECOVERY OF FUNGAL AMYLASE PREPARATION OBTAINED FROM AN ORGANISM SELECTED FROM THE GROUP CONSISTING OF MEMBERS OF THE ASPERGILLUS GENUS AND MEMBERS OF THE RHIZOPUS GENUS WHICH COMPRISES THE FOLLOWING STEPS: FIRST, MIXING SUCH PREPARATIONS IN AQUEOUS MEDIUM WITH A CLAY MINERAL; SECOND, ADDING A WATER MISCIBLE ORGANIC SOLVENT SELCTED FRON THE GROUP CONSISTING OF ACETONE, ETHANOL AND 2-PROPANOL IN AMOUNT SUFFICIENT TO PRECIPIATE THE STARCH HYDROLYZING ENZYMES ON THE CLAY MINERAL IN WATER SOLUBLE FORM; THIRD SSEPARATING THE RESULTANT CLAY MINERAL-ENZYME MIXTURE FROM THE LIQUID; THE RATIO OF SOLVENT TO WATER BEING BETWEEN 1:1 AND 2:1.
Claim 2
Dependent Claim
103 words
A PROCESS FOR THE PURIFICATION AND RECOVERY OF FUNGAL AMYLASE PREPARATION OBTAINED FROM AN ORGANISM SELECTED FROM THE GROUP CONSISTING OF MEMBERS OF THE ASPERGILLUS GENUS AND MEMBERS OF THE RHIZOPUS GENUS WHICH COMPRISES THE FOLLOWING STEPS: FIRST, MIXING SUCH PREPARATIONS IN AQUEOUS MEDIUM WITH A CLAY MINERAL; SECOND, ADDING A WATER MISCIBLE ORGANIC SOLVENT SELCTED FRON THE GROUP CONSISTING OF ACETONE, ETHANOL AND 2-PROPANOL IN AMOUNT SUFFICIENT TO PRECIPIATE THE STARCH HYDROLYZING ENZYMES ON THE CLAY MINERAL IN WATER SOLUBLE FORM; THIRD SSEPARATING THE RESULTANT CLAY MINERAL-ENZYME MIXTURE FROM THE LIQUID; THE RATIO OF SOLVENT TO WATER BEING BETWEEN 1:1 AND 2:1.
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) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |