Patent US2829947A successfully refreshed from Google Patents.
Patent US3274073A successfully refreshed from Google Patents.
US3274073A
Expired / Lapsed
US
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Method for recovering chlorophylls from papaya plants
Assignee: Individual
•
Filing: 1964-07-20
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Granted: 1966-09-20
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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
2026-11-07 15:19
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/22; A; A61; A61K; A61K36/00; A61K36/18; A61K36/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A METHOD OF RECOVERING CHLOROPHYLLS FROM PAPAYA PLANTS COMPRISING THE STEPS OF: (A) EXTRACTING A LIQUID FROM THE PLANTS, (B) ADJUSTING THE PH OF THE LIQUID TO 4.0-4.5, (C) HEATING AND DIGESTING THE LIQID UNTIL A COAGULATE IS FORMED THEREIN, (D) SEPARATING THE LIQUID FROM THE COAGULATE, (E) NEUTRALIZING THE COAGULATE AND HEATING TO DESTROY THE ENZYMES PRESENT, (F) DEHYDRATING THE COAGULATE, (G) SOLVENT EXTRACTING THE DEHYDRATED COAGULATE WITH HYDROCARBON SOLVENTS HAVING A BOILING RANGE OF APPROXIMATELY 65*C. TO APPROXIMATELY 85*C. FOR SEPARATION OF CAROTENOIDS FROM THE CHLOROPHYLL CONTAINING COAGULATE, (H) SOLVENT EXTRACTING THE COAGULATE WITH A SOLVENT TO RECOVER THE CHLOROPHYLLS FROM THE RESIDUE, (I) SEPARATING THE SOLVENT FROM THE CHLOROPHYLLS, AND (J) REFINING THE SEPARATED CHLOROPHYLLS.
Claim 2
Independent Claim
118 words
A METHOD OF RECOVERING CHLOROPHYLLS FROM PAPAYA PLANTS COMPRISING THE STEPS OF: (A) EXTRACTING A LIQUID FROM THE PLANTS, (B) ADJUSTING THE PH OF THE LIQUID TO 4.0-4.5, (C) HEATING AND DIGESTING THE LIQID UNTIL A COAGULATE IS FORMED THEREIN, (D) SEPARATING THE LIQUID FROM THE COAGULATE, (E) NEUTRALIZING THE COAGULATE AND HEATING TO DESTROY THE ENZYMES PRESENT, (F) DEHYDRATING THE COAGULATE, (G) SOLVENT EXTRACTING THE DEHYDRATED COAGULATE WITH HYDROCARBON SOLVENTS HAVING A BOILING RANGE OF APPROXIMATELY 65*C. TO APPROXIMATELY 85*C. FOR SEPARATION OF CAROTENOIDS FROM THE CHLOROPHYLL CONTAINING COAGULATE, (H) SOLVENT EXTRACTING THE COAGULATE WITH A SOLVENT TO RECOVER THE CHLOROPHYLLS FROM THE RESIDUE, (I) SEPARATING THE SOLVENT FROM THE CHLOROPHYLLS, AND (J) REFINING THE SEPARATED CHLOROPHYLLS.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |