US3186918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low viscosity casein
Assignee: Hexion Inc
•
Filing: 1962-07-20
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Granted: 1965-06-01
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Expires: 1982-07-20
Abstract
No abstract record available.
Inventors
- 👤 Harold K Salzberg
- 👤 Milton R Simonds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:39
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/50; C; C08; C08L; C08L89/00; C08L89/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN MAKING A CASEIN OF LOWERED VISCOSITY OF SOLUTION AND SATISFACTORY STRENGTH IN THE FORM OF AN ADHESIVE BOND, THE PROCESS WHICH COMPRISES MIXING A PROTEASE THAT IS ACTIVE IN ALKALINE MEDIUM INTO MILK CONTAINING THE CASEIN IN THE NATURAL MICELLAR CONDITION, ADMIXING A WATER SOLUBLE ALKALI IN AMOUNT TO MAKE THE MILK PROTEASE COMPOSITION ALKALINE, MAINTAINING THE RESULTING MIXTURE AT A TEMPERATURE APPROXIMATELY WITHIN THE RANGE 90*-120*F. UNTIL THE VISCOSITY OF THE CASEIN IN LOWER BY AT LEAST ABOUT A THIRD, DISCONTINUING THE TREATMENT BEFORE THE CASEIN BECOMES NONPRECIPITATABLE AT THE ISOELECTRIC POINT FOR CASEIN, THEN ADMIXING A CURDING ACID IN AMOUNT TO ESTABLISH THE PH AT APPROXIMATELY THE SAID ISOELECTRIC POINT, SO AS TO PRECIPITATE THE CASEIN, AND SEPARATING THE CASEIN FROM THE WHEY THAT REMAINS.
Claim 2
Dependent Claim
128 words
IN MAKING A CASEIN OF LOWERED VISCOSITY OF SOLUTION AND SATISFACTORY STRENGTH IN THE FORM OF AN ADHESIVE BOND, THE PROCESS WHICH COMPRISES MIXING A PROTEASE THAT IS ACTIVE IN ALKALINE MEDIUM INTO MILK CONTAINING THE CASEIN IN THE NATURAL MICELLAR CONDITION, ADMIXING A WATER SOLUBLE ALKALI IN AMOUNT TO MAKE THE MILK PROTEASE COMPOSITION ALKALINE, MAINTAINING THE RESULTING MIXTURE AT A TEMPERATURE APPROXIMATELY WITHIN THE RANGE 90*-120*F. UNTIL THE VISCOSITY OF THE CASEIN IN LOWER BY AT LEAST ABOUT A THIRD, DISCONTINUING THE TREATMENT BEFORE THE CASEIN BECOMES NONPRECIPITATABLE AT THE ISOELECTRIC POINT FOR CASEIN, THEN ADMIXING A CURDING ACID IN AMOUNT TO ESTABLISH THE PH AT APPROXIMATELY THE SAID ISOELECTRIC POINT, SO AS TO PRECIPITATE THE CASEIN, AND SEPARATING THE CASEIN FROM THE WHEY THAT REMAINS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |