US3290216A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification and de-pyrogenation of chorionic gonadotropin
Assignee: Ormonoterapia Richter SpA
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Filing: 1960-11-23
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Granted: 1966-12-06
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Expires: 1980-11-23
Abstract
No abstract record available.
Inventors
- 👤 Toccaceli Nazzareno
- 👤 Salvioni Enzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:47
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/17; A61K38/22; A61K38/24; B; B01; B01J; B01J47/00; B01J47/014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
THE METHOD FOR THE PURIFICATION AND DEPYROGENATION OF CHORIONIC GONADOTROPIN HORMONE WHICH COMPRISES PERCOLATING A SODIUM ACETATE SOLUTION OF CHORIONIC GONADOTROPIN BUFFERED TO A PH TO 6.0 THROUGH A SUSPENSION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF DEAE CELLULOSE AND ECTEOLA CELLULOSE, WHEREIN THE WEIGHT RATIO OF SAID MEMBER TO CHORINIC GONADOTROPIN TO BE TREATED IS IN THE RANGE OF FROM 3:1 TO 15:1, IN AN AQUEOUS SOLUTION OF SODIUM ACETATE CONTROLLED AND MAINTAINED AT A PH OF ABOUT 6.0, AT A TEMPERATURE IN THE RANGE OF FROM 0 TO 4*C. FOR A PERIOD OF TIME SUFFICIENT TO REMOVE PYROGENS, SEPARATING A PERCOLATE THEREFROM AND TREATING WITH A MEMBER OF THE GROUP CONSISTING OF ACETONE AND ETHYL ALCOHOL TO PRECIPITATE A PURIFIED, DEPYROGENATED CHORIONIC GONADOROPIN.
Claim 2
Independent Claim
127 words
THE METHOD FOR THE PURIFICATION AND DEPYROGENATION OF CHORIONIC GONADOTROPIN HORMONE WHICH COMPRISES PERCOLATING A SODIUM ACETATE SOLUTION OF CHORIONIC GONADOTROPIN BUFFERED TO A PH TO 6.0 THROUGH A SUSPENSION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF DEAE CELLULOSE AND ECTEOLA CELLULOSE, WHEREIN THE WEIGHT RATIO OF SAID MEMBER TO CHORINIC GONADOTROPIN TO BE TREATED IS IN THE RANGE OF FROM 3:1 TO 15:1, IN AN AQUEOUS SOLUTION OF SODIUM ACETATE CONTROLLED AND MAINTAINED AT A PH OF ABOUT 6.0, AT A TEMPERATURE IN THE RANGE OF FROM 0 TO 4*C. FOR A PERIOD OF TIME SUFFICIENT TO REMOVE PYROGENS, SEPARATING A PERCOLATE THEREFROM AND TREATING WITH A MEMBER OF THE GROUP CONSISTING OF ACETONE AND ETHYL ALCOHOL TO PRECIPITATE A PURIFIED, DEPYROGENATED CHORIONIC GONADOROPIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |