US4409330A
Expired / Lapsed
US
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Material and method for removing immunoglobulins from whole blood
Assignee: EMD Millipore Corp
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Filing: 1980-11-24
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Granted: 1983-10-11
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Expires: 2000-11-24
Abstract
Abstract An immunoadsorbent material comprising inactivated, protein-A bearing Staphlococcus aureus immobilized in a polymeric matrix is used to remove IgG immunoglobulins and immune complexes from whole blood.
Inventors
- 👤 John K. Pollard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:44
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/321; A; A61; A61M; A61M1/00; A61M1/36; A61M1/3679; B01J20/3212; B01J20/3231; B01J20/3242; B01J20/3244; B01J20/3268; B01J20/3272; B01J20/3274; C; C07; C07K; C07K16/00; C07K16/06; C07K16/065; C12; C12N; C12N11/00; C12N11/02; C12N11/04; C12N11/08; C12N11/089; C12N11/098; C12N11/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
An immunoadsorbent material for removing IgG immunoglobulins and immune complexes from whole blood comprising inactivated, protein A-bearing Staphlococcus aureus bacteria immobilized in a polymeric matrix, said material being in the form of gel like beads having an average diameter ranging from 100 to 1000 microns.
Claim 2
Dependent Claim
45 words
An immunoadsorbent material for removing IgG immunoglobulins and immune complexes from whole blood comprising inactivated, protein A-bearing Staphlococcus aureus bacteria immobilized in a polymeric matrix, said material being in the form of gel like beads having an average diameter ranging from 100 to 1000 microns.
Claim 3
Dependent Claim
24 words
An immunoadsorbent material according to claim 1 wherein said polymeric matrix is selected from the group consisting of agarose, chitosan, polyacrylamide and polyacrylamide derivatives.
Claim 4
Dependent Claim
13 words
An immunoadsorbent material according to claim 2 wherein said polymeric matrix is agarose.
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) | 1986-10-10 | 1987-04-11 | 1987-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-10 | 1991-04-11 | 1991-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-10 | 1995-04-11 | 1995-10-11 | $7700.00 | Window Closed / Lapsed |