Patent US3248300A successfully refreshed from Google Patents.
US3248300A
Expired / Lapsed
US
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Method of recovering carpaines from papaya plants
Assignee: Individual
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Filing: 1964-07-20
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Granted: 1966-04-26
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Expires: 1984-07-20
Abstract
No abstract record available.
Inventors
- 👤 Everette M Burdick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:55
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/18; A61K36/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
THE METHOD OF RECOVERING PROTEOLYTIC ENZYMES AND CARPAINES FROM PAPAYA PLANTS COMPRISING THE STEPS OF: (A) EXTRACTING A LIQUID FROM THE PLANTS, (B) ADJUSTING THE PH OF THE LIQUID TO THE RANGE OF APPROXIMATELY 4.0 TO 4.5, (C) DIGESTING THE LIQUID AT NOT MORE THAN APPROXIMATELY 55*C. UNTIL A COAGULATE IS FORMED THEREIN, (D) SEPARATING THE LIQUID FROM THE COAGULATE, (E) TREATING THE LIQUID WITH AN ENZYME PRECIPITATING SOLVENT TO SEPARATE THE PROTEOLYTIC ENZYMES FROM THE LIQUID, (F) TREATING THE REMAINING LIQUIDS TO RECOVER THE ENZYME SEPARATING SOLVENT THEREFROM, (G) ADDING AN ALKALI THERETO TO ADJUST THE PH OF THE LIQUID TO THE RANGE OF APPROXIMATELY 9 TO 11, (H) SOLVENT EXTRACTING THE ALKALINIZED LIQUID WITH AN ORGANIC SOLVENT IN WHICH CARPAINES ARE SOLUBLE TO RECOVER THE CARPAINES FROM THE LIQUID, (I) SEPARATING THE SOLVENT AND THE CARPAINES, AND (J) REFINING THE SEPARATED CARPAINES TO PRODUCE REFINED CARPAINES.
Claim 2
Independent Claim
61 words
A METHOD OF TREATING PAPAYA PLANTS TO RECOVER CARPAINES THEREFROM COMPRISING THE STEPS OF: (A) TREATING THE PLANTS WITH A NONORGANIC SOLUTION AND EXTRACTING THE PLANTS TO RECOVER A LIQUID PORTION AND A PULPOUS MASS, (B) DIGESTING THE LIQUID PORTION UNTIL A COAGULATE IS FORMED THEREIN, AND (C) RECOVERNG THE CARPAINES FROM THE LIQUID PORTION AFTER THE COAGULATE IS FORMED THEREIN.
References Cited (Backward Citations)
US3141832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |