Patent US2991309A successfully refreshed from Google Patents.
US2991309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protein hydrolysis
Assignee: International Minerals and Chemical Corp
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Filing: 1957-12-30
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Granted: 1961-07-04
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Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 Forest A Hoglan
- 👤 Kodras Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:34
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/30; A23J3/32; A23J3/325
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A PROCESS FOR PREPARING A PROTEIN HYDROLYZATES OF IMPROVED FLAVOR, WHICH COMPRISES SUBJECTING A PROTEIN TO HYDROLYSIS WITH SULFURIC ACID, COMMING THE HYDROLYZATE WITH LIME TO A PH ABOVE ABOUT 10, ADDING ALKALIMETAL HYDROXIDE THERETO IN A PROPORTION AT LEAST EQUIVALENT TO BUT NO MORE THAN ABOUT 10% IN EXCESS OF THE GLUTAMIC ACID AND ASPARTIC ACID CONTAINED THEREIN, FILTERING CALCIUM SULFAE THEREFROM, ADDING AMMMONIUM CARBONATE TO THE LIQUID PHASE UNTIL THE PRECIPITATION OF CALCIUM THEREFROM CEASES, SEPARATING THE RESULTING PRECIPITATE OF CALCIUM, CARBONATE, STRIPPING AMMONIA FROM THE LIQUID PHASE, ADJUSSTING THE PH OF THE LIQUID PHASE TO BETWEEN ABOUT 5 AND ABOUT 6 WITH HYDROCHOCLORIC ACID, AND DECOLOIZING THE ADJUSTED LIQUID PHASE BY TREATMENT WITH ACTIVATED CARBON AT ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
121 words
A PROCESS FOR PREPARING A PROTEIN HYDROLYZATES OF IMPROVED FLAVOR, WHICH COMPRISES SUBJECTING A PROTEIN TO HYDROLYSIS WITH SULFURIC ACID, COMMING THE HYDROLYZATE WITH LIME TO A PH ABOVE ABOUT 10, ADDING ALKALIMETAL HYDROXIDE THERETO IN A PROPORTION AT LEAST EQUIVALENT TO BUT NO MORE THAN ABOUT 10% IN EXCESS OF THE GLUTAMIC ACID AND ASPARTIC ACID CONTAINED THEREIN, FILTERING CALCIUM SULFAE THEREFROM, ADDING AMMMONIUM CARBONATE TO THE LIQUID PHASE UNTIL THE PRECIPITATION OF CALCIUM THEREFROM CEASES, SEPARATING THE RESULTING PRECIPITATE OF CALCIUM, CARBONATE, STRIPPING AMMONIA FROM THE LIQUID PHASE, ADJUSSTING THE PH OF THE LIQUID PHASE TO BETWEEN ABOUT 5 AND ABOUT 6 WITH HYDROCHOCLORIC ACID, AND DECOLOIZING THE ADJUSTED LIQUID PHASE BY TREATMENT WITH ACTIVATED CARBON AT ELEVATED TEMPERATURE.
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) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |