US3147185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for purifying viral substances and composition
Assignee: Merck and Co Inc
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Filing: 1959-09-10
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Granted: 1964-09-01
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Charney Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:27
CPC Classifications
C; C12; C12N; C12N7/00; A; A61; A61K; A61K39/00; A61K39/12; A61K39/125; A61K39/13; C12N15/00; C12N15/09; C12N15/10; C12N15/1003; C12N2770/00; C12N2770/00011; C12N2770/32011; C12N2770/32611; C12N2770/32634; C12N2770/32651; Y; Y02; Y02A; Y02A50/00; Y02A50/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PROCESS FOR PURIFYING AND CONCENTRATING POLIOMYELITIS VIRAL SUBSTANCES FROM POLIOMYELITIS VIRAL SUBSTANCE-CONTAINING FLUIDS, COMPRISING ADDING NUCLEIC ACID TO THE POLIOMYELITIS VIRAL SUBSTANCE-CONTAINING FLUID AND ADJUSTING THE PH TO BETWEEN 2-4 AND RECOVERING THE PRECIPITATED POLIOMYELITIS VIRAL SUBSTANCE.
Claim 2
Dependent Claim
38 words
A PROCESS FOR PURIFYING AND CONCENTRATING POLIOMYELITIS VIRAL SUBSTANCES FROM POLIOMYELITIS VIRAL SUBSTANCE-CONTAINING FLUIDS, COMPRISING ADDING NUCLEIC ACID TO THE POLIOMYELITIS VIRAL SUBSTANCE-CONTAINING FLUID AND ADJUSTING THE PH TO BETWEEN 2-4 AND RECOVERING THE PRECIPITATED POLIOMYELITIS VIRAL SUBSTANCE.
References Cited (Backward Citations)
US2946724A
Cited
US2966443A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |