US4041152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pharmaceutical formulation of interferon insolubilized by fixation on a support
Assignee: Individual
•
Filing: 1974-07-22
•
Granted: 1977-08-09
•
Expires: 1994-07-22
Abstract
Abstract A pharmaceutical product consists of interferon which has been rendered insoluble by being coupled to a support, such as sepharose.
Inventors
- 👤 Charles Chany
- 👤 Brigitte Galliot
- 👤 Marie-Josephe Chevalier
- 👤 Helmut Ankel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:41
CPC Classifications
C; C07; C07K; C07K14/00; C07K14/435; C07K14/52; C07K14/555; A; A61; A61K; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/61; A61K38/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
39 words
A pharmaceutical product comprising an effective amount of interferon rendered insoluble by fixation by way of covalent bonds on a previously activated support selected from the group consisting of agarose, dextran, levan, mannan, pectin, xylan, galactan, glycerol-pectate and heparin.
Claim 2
Dependent Claim
39 words
A pharmaceutical product comprising an effective amount of interferon rendered insoluble by fixation by way of covalent bonds on a previously activated support selected from the group consisting of agarose, dextran, levan, mannan, pectin, xylan, galactan, glycerol-pectate and heparin.
Claim 3
Dependent Claim
47 words
A process for the preparation of the pharmaceutical product according to claim 1 which comprises activating the support by means of the Porath process and then reacting the activated support with the interferon to provide a pharmaceutical product having interferon fixed by covalent bonds to said support.
Claim 4
Dependent Claim
15 words
A pharmaceutical composition comprising the product of claim 1 in association with a pharmaceutical carrier.
Claim 5
Dependent Claim
15 words
A pharmaceutical product comprising interferon fixed by electrostatic bonds on a support comprising concavallin A.
Claim 6
Dependent Claim
15 words
A pharmaceutical product comprising interferon fixed by electrostatic bonds on a support comprising concavallin A.
Claim 7
Dependent Claim
47 words
A process for the preparation of the pharmaceutical product according to claim 4 which comprises mixing of a solution of interferon with a suspension of concavallin A in M.E.M. medium, the contact being maintained for a sufficient period of time to couple the maximum amount of interferon.
Claim 8
Dependent Claim
15 words
A pharmaceutical composition comprising the product of claim 1 in association with a pharmaceutical carrier.
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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |