Patent US3153030A successfully refreshed from Google Patents.
US3153030A
Expired / Lapsed
US
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Fining of gelatin solutions with phosphates
Assignee: General Foods Corp
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Filing: 1961-01-11
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Granted: 1964-10-13
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Expires: 1981-01-11
Abstract
No abstract record available.
Inventors
- 👤 George A Consolazio
- 👤 Ronald E Moses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:08
CPC Classifications
C; C09; C09H; C09H3/00; C09H3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE METHOD OF FINING A GELATIN SOLUTION CONTAINING A MINOR AMOUNT OF CHROMIUM AS AN IMPURITY, WHICH COMPRISES ADDING TO SAID SOLUTION A SOLUBLE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM PHOSPHATES, ORTHOPHOSPHATES, PYROPHOSPHATES, ORTHOPHOSPHORIC ACID AND MIXTURES THEREOF, ADDING AMMONIUM HYDROXIDE TO SAID SOLUTION TO ADJUST THE PH THEREOF TO A RANGE OF ABOUT 7.0 TO 9.5, MAINTAINING THE RESULTING SOLUTION AT SAID PH UNTIL A PRECIPITATE OF SAID PHOSPHATE FORMS WHICH CARRIES DOWN SAID CHROMIUM IMPURITY, AND SEPARATING THE PRECIPITATE FROM THE FINE GELATIN SOLUTION.
Claim 2
Independent Claim
91 words
THE METHOD OF FINING A GELATIN SOLUTION CONTAINING A MINOR AMOUNT OF CHROMIUM AS AN IMPURITY, WHICH COMPRISES ADDING TO SAID SOLUTION A SOLUBLE PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL AND AMMONIUM PHOSPHATES, ORTHOPHOSPHATES, PYROPHOSPHATES, ORTHOPHOSPHORIC ACID AND MIXTURES THEREOF, ADDING AMMONIUM HYDROXIDE TO SAID SOLUTION TO ADJUST THE PH THEREOF TO A RANGE OF ABOUT 7.0 TO 9.5, MAINTAINING THE RESULTING SOLUTION AT SAID PH UNTIL A PRECIPITATE OF SAID PHOSPHATE FORMS WHICH CARRIES DOWN SAID CHROMIUM IMPURITY, AND SEPARATING THE PRECIPITATE FROM THE FINE GELATIN SOLUTION.
References Cited (Backward Citations)
US2166297A
Cited
DE709331C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |