Patent US4031201A successfully refreshed from Google Patents.
US4031201A
Expired / Lapsed
US
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Fibres incorporating antibodies, antigens and antisera, method for their preparation and their use
Assignee: Anic SpA
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Filing: 1975-07-29
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Granted: 1977-06-21
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Expires: 1995-07-29
Abstract
Abstract Artificial fibres containing antibodies, antigens or antisera are prepared by emulsifying the substances to be incorporated in the interior of the fibres and spinning the emulsion thus obtained through a spinneret immersed in an appropriate coagulation bath, when the coagulation liquor and the solvent(s) have been removed, a fibre is obtained which can be used in many fields wherever it is required to remove antibodies, antigens or antisera from certain substances. The fibres thus obtained could also be used for chromatographical methods of the affinity chromatography type.
Inventors
- 👤 Onofrio Lostia
- 👤 Francesco Bartoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:28
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/544; G01N33/549; A; A61; A61K; A61K39/00; A61K39/395; A61K39/44; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01F2/00; D01F2/24; D01F2/28; Y; Y10; Y10S; Y10S436/00; Y10S436/825
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A method for the preparation of porous fibres having microcavities containing antibody, antigen or antisera substances, and including selecting a spinning solvent and polymer which will not cause inactivation of the substances to be contained in said microcavities, comprising preparing the antibody, antigen or antisera substance to be embedded in the fibres and verifying the aspecific fixing of the substance on the material from which the fibres are to be made, and its lack of or non-significant inactivation, by treatment with the spinning solvents that are to be used in producing the fibres, mixing said substance with water or mixtures of glycerol and water, adding the mixture containing the substance to said polymer in solution, stirring until a homogeneous emulsion is obtained, spinning the emulsion through a spinneret immersed in a coagulation bath to produce porous fibres with said substance occluded within the microcavities in said fibres, and removing the coagulation liquor and the solvent of the polymer from the fibres by treatment thereof in a stream of air or other gas.
Claim 2
Independent Claim
172 words
A method for the preparation of porous fibres having microcavities containing antibody, antigen or antisera substances, and including selecting a spinning solvent and polymer which will not cause inactivation of the substances to be contained in said microcavities, comprising preparing the antibody, antigen or antisera substance to be embedded in the fibres and verifying the aspecific fixing of the substance on the material from which the fibres are to be made, and its lack of or non-significant inactivation, by treatment with the spinning solvents that are to be used in producing the fibres, mixing said substance with water or mixtures of glycerol and water, adding the mixture containing the substance to said polymer in solution, stirring until a homogeneous emulsion is obtained, spinning the emulsion through a spinneret immersed in a coagulation bath to produce porous fibres with said substance occluded within the microcavities in said fibres, and removing the coagulation liquor and the solvent of the polymer from the fibres by treatment thereof in a stream of air or other gas.
Claim 3
Dependent Claim
26 words
A method for the preparation of fibres as defined in claim 1, wherein said polymer is selected from cellulose polymers, esterified, etherified, or nitrated cellulose polymers.
Claim 4
Dependent Claim
45 words
A method for the preparation of fibers as defined in claim 1, wherein said polymer is polyethylene, polyamides, polymers or copolymers of acrylonitrile, butadiene or isoprene, acrylates, methacrylates, vinyl esters, vinyl chloride, the polymers and copolymers of vinylidene chloride, styrene, vinyl butyrate or gamma-methyl glutamate.
Claim 5
Dependent Claim
71 words
A polymeric structure comprising a porous artificial fibre made according to the process as defined in claim 1, wherein the substance occluded in the fibre is selected from the group consisting of antibodies, antigens and antisera, and the pores of said fibre are of such nature as to prevent escape of said occluded substance but to allow for the penetration of the agent that is to be reacted with said substance.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |