US3014843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing non-virulent strains of attenuated and stabilized hog cholera virus
Assignee: Armour and Co
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Filing: 1955-02-07
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Granted: 1961-12-26
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Expires: 1975-02-07
Abstract
No abstract record available.
Inventors
- 👤 James A Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/12; A61K39/187; A61K2039/51; A61K2039/525; A61K2039/5254; A61K2039/55; A61K2039/552; C; C12; C12N; C12N2770/00; C12N2770/00011; C12N2770/24011; C12N2770/24311; C12N2770/24334; Y; Y10; Y10S; Y10S436/00; Y10S436/826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
THE METHOD OF ESTABLISHING THE NON-VIRULENCE OF AN ATTENUATED STRAIN OF HOG CHOLERA VIRUS, WHEREBY RELATIVELY NON-VIRULENT STRAINS CAN BE OBTAINED FOR PRODUCING HOG CHOLERA VACCINES, CHARACTERIZED BY THE STEPS OF INOCULATING A NON-IMMUNE PIG SUITABLE FOR MAINTAINING A PERSISTENT VIRUS INFECTION WITH A HOG CHOLERA ATTENUATED VIRUS, SAID NON-IMMUNE PIG BEING LESS THAN THREE MONTHS OF AGE, FEEDING SAID PIG AN ADEQUATE RATION FOR NORMAL GROWTH, MEASURING THE TEMPERATURE OF SAID PIG TO DETERMINE THE DEGREE OF TEMPERATURE RISE ABOVE NORMAL, AND HARVESTING VIABLE HOG CHLOREA VIRUS FROM SAID PIG WHEN THE TEMPERATURE OF SAID PIG HAS DROPPED FROM ITS MAXIMUM LEVEL ABOVE NORMAL TO AN INTERMEDIATE LEVEL ABOVE NORMAL, SAID INTERMEDIATE LEVEL BEING AT LEAST 1*F. BELOW SAID MAXIMUM LEVEL AND AT LEAST 1*F. ABOVE THE NORMAL LEVEL FOR SAID PIG, PROVIDING SAID PIG HAS APPROACHED A NORMAL RATE OF WEIGHT GAIN AND CONTINUES TO HAVE A TEMPERATURE AT SAID INTERMEDIATE LEVEL DURING THE THIRD WEEK AFTER SAID INOCULATION.
Claim 2
Independent Claim
161 words
THE METHOD OF ESTABLISHING THE NON-VIRULENCE OF AN ATTENUATED STRAIN OF HOG CHOLERA VIRUS, WHEREBY RELATIVELY NON-VIRULENT STRAINS CAN BE OBTAINED FOR PRODUCING HOG CHOLERA VACCINES, CHARACTERIZED BY THE STEPS OF INOCULATING A NON-IMMUNE PIG SUITABLE FOR MAINTAINING A PERSISTENT VIRUS INFECTION WITH A HOG CHOLERA ATTENUATED VIRUS, SAID NON-IMMUNE PIG BEING LESS THAN THREE MONTHS OF AGE, FEEDING SAID PIG AN ADEQUATE RATION FOR NORMAL GROWTH, MEASURING THE TEMPERATURE OF SAID PIG TO DETERMINE THE DEGREE OF TEMPERATURE RISE ABOVE NORMAL, AND HARVESTING VIABLE HOG CHLOREA VIRUS FROM SAID PIG WHEN THE TEMPERATURE OF SAID PIG HAS DROPPED FROM ITS MAXIMUM LEVEL ABOVE NORMAL TO AN INTERMEDIATE LEVEL ABOVE NORMAL, SAID INTERMEDIATE LEVEL BEING AT LEAST 1*F. BELOW SAID MAXIMUM LEVEL AND AT LEAST 1*F. ABOVE THE NORMAL LEVEL FOR SAID PIG, PROVIDING SAID PIG HAS APPROACHED A NORMAL RATE OF WEIGHT GAIN AND CONTINUES TO HAVE A TEMPERATURE AT SAID INTERMEDIATE LEVEL DURING THE THIRD WEEK AFTER SAID INOCULATION.
References Cited (Backward Citations)
US2594180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |