US3674864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for stabilizing preparations of interfering viruses
Assignee: Pfizer Italia SRL
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Filing: 1970-07-08
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Granted: 1972-07-04
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Expires: 1990-07-08
Abstract
Abstract A stabilized fluid preparation of interfering viruses containing a minor proportion of a mono- and/or disaccharide and a method of stabilization of interfering virus materials comprising mixing with the virus materials a minor proportion of a mono- and/or disaccharide and freeze-drying the resulting mixture.
Inventors
- 👤 Romano Angelucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:27
CPC Classifications
A; A61; A61K; A61K39/00; A61K39/12; A61K39/145; A61K2039/51; A61K2039/525; A61K2039/5252; A61K47/00; A61K47/06; A61K47/26; A61K9/00; A61K9/14; A61K9/19; C; C12; C12N; C12N2760/00; C12N2760/00011; C12N2760/16011; C12N2760/16051; C12N2760/16111; C12N2760/16134
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
17 words
A process as in claim 1 wherein the aqueous solution of virus materials and saccharide is frozen.
Claim 2
Dependent Claim
17 words
A process as in claim 1 wherein the aqueous solutions of virus materials and saccharide is freeze-dried.
Claim 3
Dependent Claim
39 words
A process as in claim 3 wherein the virus materials is selected from the group consisting of influenza virus type A, influenza virus type B, parainfluenza virus type 3, New Castle disease virus, Sindbis virus and Vescicular stomatitis virus.
Claim 4
Dependent Claim
46 words
A stabilized frozen or freeze-dried inactivated virus material in accordance with claim 1 comprising said inactivated virus material suspended in an aqueous solution consisting essentially of glucose, mannose, laevulose, galactose, sorbose, talose, tagatose, gulose, mannitol, gentiobiose, lactose, isomaltose, maltose, melibiose, nigerose, sucrose, sophorose, trehalose and xylobiose.
Claim 5
Dependent Claim
43 words
A stabilized interfering virus material as claimed in claim 5 wherein the virus material is selected from the group consisting of influenza virus type A, influenza virus type B, parainfluenza virus type 3, New Castle disease virus, Sindbis virus and Vescicular stomatitis virus.
Claim 6
Dependent Claim
13 words
A stabilized interfering virus material produced by freeze-drying the product of claim 5.
Claim 7
Dependent Claim
13 words
A stabilized interfering virus material produced by freeze-drying the product of claim 6.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |