Patent USRE23204E successfully refreshed from Google Patents.
US2981658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lipid purification and concentration of viruses and vaccines therefrom
Assignee: Individual
•
Filing: 1958-07-07
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Granted: 1961-04-25
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Expires: 1978-07-07
Abstract
No abstract record available.
Inventors
- 👤 Julius S Youngner
- 👤 Noll Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:06
CPC Classifications
C; C12; C12N; C12N7/00; C12N2760/00; C12N2760/00011; C12N2760/16011; C12N2760/16111; C12N2760/16151
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
54 words
IN A METHOD FOR THE PURIFICATION AND CONCENTRATION OF VIRUSES OTHER THAN ENTERO VIRUSES, THE STEPS OF BRINGING THE IMPURE VIRUS IN AN AQUEOUS MEDIUM INTO CONTACT WITH A WATER-INSOLUBLE LIPID HAVING A POLAR HYDROPHILIC GROUP AND DISPERSIBLE IN SAID MEDIUM, AND SEPARATING THE LIPID AND ADSORBED VIRUS THEREON FROM THE REMAINING BIOLOGICAL CONTAMINANTS.
Claim 2
Dependent Claim
54 words
IN A METHOD FOR THE PURIFICATION AND CONCENTRATION OF VIRUSES OTHER THAN ENTERO VIRUSES, THE STEPS OF BRINGING THE IMPURE VIRUS IN AN AQUEOUS MEDIUM INTO CONTACT WITH A WATER-INSOLUBLE LIPID HAVING A POLAR HYDROPHILIC GROUP AND DISPERSIBLE IN SAID MEDIUM, AND SEPARATING THE LIPID AND ADSORBED VIRUS THEREON FROM THE REMAINING BIOLOGICAL CONTAMINANTS.
Claim 3
Dependent Claim
18 words
A VIRUS VACCINE COMPRISING AN AQUEOUS SUSPENSION OF A VIRUS OTHER THAN AN ENTERO VIRUS IRREVERSIBLY ADWATER-INSOLUBLE LIPID.
Claim 4
Dependent Claim
18 words
A VIRUS VACCINE COMPRISING AN AQUEOUS SUSPENSION OF A VIRUS OTHER THAN AN ENTERO VIRUS IRREVERSIBLY ADWATER-INSOLUBLE LIPID.
References Cited (Backward Citations)
US2057623A
Cited
GB506095A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |