Patent US2965544A successfully refreshed from Google Patents.
US2965544A
Expired / Lapsed
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Tissue culture propagated canine distemper virus and vaccine thereof
Assignee: Wyeth Holdings LLC
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Filing: 1959-02-24
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Granted: 1960-12-20
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Expires: 1979-02-24
Abstract
No abstract record available.
Inventors
- 👤 Cabasso Victor Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:57
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/12; A61K39/155; A61K39/175; A61K2039/51; A61K2039/525; A61K2039/5254; A61K2039/55; A61K2039/552; C; C12; C12N; C12N2760/00; C12N2760/00011; C12N2760/18011; C12N2760/18411; C12N2760/18434
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS OF PROPAGATING CANINE DISTEMPER VIRUS MODIFIED BY PASSAGE THROUGH LIVE CHICK EMBRYOS FOR A SUFFICIENT NUMBER OF PASSAGES UNTIL ON INJECTION INTO SUSECPTIBLE FERRETS AND DOGS THE ANIMALS DID NOT SHOW DISTEMPER SYMPTOMS, WHICH COMPRISES INOCULATING THE SOMODIFIED VIRUS INTO A CULTURE OF TRYPSINIZED CHICK EMBRYO TISSUE IN VITRO, INCUBATING AND HARVESTING THE RESULTING VACCINES FOR A NUMBER OF SERIAL PASSAGES THROUGH SUCH TRYPSINIZED TISSUE TO OBTAIN A CANINE DISTEMPER VACCINE OF IMMUNOLOGICAL TITER AND ANTIGENICITY UNDIMINISHED WITH RESPECT TO THAT OF THE LIVE CHICK EMBRYO-MODIFIED VIRUS BUT OF DIMINISHED EMBRYONIC TISSUE CONTAMINATION.
Claim 2
Dependent Claim
95 words
A PROCESS OF PROPAGATING CANINE DISTEMPER VIRUS MODIFIED BY PASSAGE THROUGH LIVE CHICK EMBRYOS FOR A SUFFICIENT NUMBER OF PASSAGES UNTIL ON INJECTION INTO SUSECPTIBLE FERRETS AND DOGS THE ANIMALS DID NOT SHOW DISTEMPER SYMPTOMS, WHICH COMPRISES INOCULATING THE SOMODIFIED VIRUS INTO A CULTURE OF TRYPSINIZED CHICK EMBRYO TISSUE IN VITRO, INCUBATING AND HARVESTING THE RESULTING VACCINES FOR A NUMBER OF SERIAL PASSAGES THROUGH SUCH TRYPSINIZED TISSUE TO OBTAIN A CANINE DISTEMPER VACCINE OF IMMUNOLOGICAL TITER AND ANTIGENICITY UNDIMINISHED WITH RESPECT TO THAT OF THE LIVE CHICK EMBRYO-MODIFIED VIRUS BUT OF DIMINISHED EMBRYONIC TISSUE CONTAMINATION.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |