US3456053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inactivated hog cholera virus vaccine
Assignee: Pfizer Inc
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Filing: 1966-05-06
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Granted: 1969-07-15
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Expires: 1986-05-06
Abstract
No abstract record available.
Inventors
- 👤 James G Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:06
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/12; A61K39/187; A61K2039/51; A61K2039/525; A61K2039/5252; A61K2039/55; A61K2039/552; A61K2039/555; A61K2039/55505; C; C12; C12N; C12N2770/00; C12N2770/00011; C12N2770/24011; C12N2770/24311; C12N2770/24334
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR PREPARING AN INACTIVATED HOG CHOLERA VACCINE WHICH COMPRISES GROWING A VACCINE VIRUS BY INFECTING A SWINE TISSUE CULTURE MONOLAYER WITH VIRULENT HOG CHOLERA VIRUS AT A PH OF ABOUT 7.2 TO ABOUT 7.6 UNTIL SUBSTANTIAL VIRUS REPLICATION HAS OCCURRED, COOLING SAID RESULTING VACCINE VIRUS TO THE FROZEN STATE FOLLOWE BY WARMING SAID VACCINE VIRUS UNTIL IT THAWS OUT, AND RECOVERING THE VIRULENT VIRUS AFTER THAWING, BY SEPARATING THE TISSUE DEBRIS FROM THE VIRUS FLUIDS; INACTIVATING SAID VIRULENT VIRUS BY THE STEP OF (U) CONTACTING THE RECOVERED VIRULENT VIRUS WITH AQUEOUS TOLUIDINE BLUE, HYDROXYLAMINE, ETHYLENE OXIDE, AND (2) WHERE AQUEOUS TOLUIDINE BLUE IS EMPLOYED, IRRADIATING THE RESULTING MATERIAL WITH FLOOD LAMPS; AND HARVESTING THE INACTIVATED VACCINE PRODUCT.
Claim 2
Dependent Claim
119 words
A PROCESS FOR PREPARING AN INACTIVATED HOG CHOLERA VACCINE WHICH COMPRISES GROWING A VACCINE VIRUS BY INFECTING A SWINE TISSUE CULTURE MONOLAYER WITH VIRULENT HOG CHOLERA VIRUS AT A PH OF ABOUT 7.2 TO ABOUT 7.6 UNTIL SUBSTANTIAL VIRUS REPLICATION HAS OCCURRED, COOLING SAID RESULTING VACCINE VIRUS TO THE FROZEN STATE FOLLOWE BY WARMING SAID VACCINE VIRUS UNTIL IT THAWS OUT, AND RECOVERING THE VIRULENT VIRUS AFTER THAWING, BY SEPARATING THE TISSUE DEBRIS FROM THE VIRUS FLUIDS; INACTIVATING SAID VIRULENT VIRUS BY THE STEP OF (U) CONTACTING THE RECOVERED VIRULENT VIRUS WITH AQUEOUS TOLUIDINE BLUE, HYDROXYLAMINE, ETHYLENE OXIDE, AND (2) WHERE AQUEOUS TOLUIDINE BLUE IS EMPLOYED, IRRADIATING THE RESULTING MATERIAL WITH FLOOD LAMPS; AND HARVESTING THE INACTIVATED VACCINE PRODUCT.
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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |