Patent US3297533A successfully refreshed from Google Patents.
US3297533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biologically active animal extracts
Assignee: Individual
•
Filing: 1963-07-26
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Granted: 1967-01-10
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Expires: 1983-07-26
Abstract
No abstract record available.
Inventors
- 👤 Szent-Gyorgyi Albert
- 👤 Andrew F Hegyell
- 👤 Jane A Mclaughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:45
CPC Classifications
A; A61; A61K; A61K35/00; A61K35/12; A61K35/22; A61K35/14; A61K35/44; A61K35/55; Y; Y10; Y10S; Y10S530/00; Y10S530/827; Y10S530/829; Y10S530/834; Y10S530/837; Y10S530/841
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE PROCESS OF OBTAINING A BIOLOGICALLY ACTIVE EXTRACT INHIBITING CANCER GROWTH IN ANIMALS WHICH COMPRISES EXTRACTING ANIMAL MATTER SELECTED FROM THE GROUP CONSISTING OF MUSCLE, BLOOD VESSELS, GLANDS AND URINE WITH A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, LOWER ALKANOLS AND ACETONE, SEPARATING INSOLUBLES, ACIDIFYING THE RESULTANT EXTRACT TO A PH IN THE RANGE OF 1 TO 4, EXTRACTING THE ACIDIFIED SOLUTION WITH CHLOROFORM, RECOVERING THE CHLOROFORM-SOLUBLE FRACTION, DISSOLVING SAID CHLOROFORMSOLUBLE FRACTION IN A LOWER ALKANOL, SUBJECTING THE ALKANOL SOLUTION TO CHROMATOGRAPHIC FRACTIONATION AND RECOVERING THE ACTIVE EXTRACT FROM THE MOVING ELUTANT PORTION OF SAID FRACTIONATION.
Claim 2
Dependent Claim
98 words
THE PROCESS OF OBTAINING A BIOLOGICALLY ACTIVE EXTRACT INHIBITING CANCER GROWTH IN ANIMALS WHICH COMPRISES EXTRACTING ANIMAL MATTER SELECTED FROM THE GROUP CONSISTING OF MUSCLE, BLOOD VESSELS, GLANDS AND URINE WITH A SOLVENT SELECTED FROM THE GROUP CONSISTING OF WATER, LOWER ALKANOLS AND ACETONE, SEPARATING INSOLUBLES, ACIDIFYING THE RESULTANT EXTRACT TO A PH IN THE RANGE OF 1 TO 4, EXTRACTING THE ACIDIFIED SOLUTION WITH CHLOROFORM, RECOVERING THE CHLOROFORM-SOLUBLE FRACTION, DISSOLVING SAID CHLOROFORMSOLUBLE FRACTION IN A LOWER ALKANOL, SUBJECTING THE ALKANOL SOLUTION TO CHROMATOGRAPHIC FRACTIONATION AND RECOVERING THE ACTIVE EXTRACT FROM THE MOVING ELUTANT PORTION OF SAID FRACTIONATION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |