Patent US4348374A successfully refreshed from Google Patents.
US4348374A
Expired / Lapsed
US
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Charcoal coated adsorbent device
Assignee: Abbott Laboratories
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Filing: 1978-04-27
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Granted: 1982-09-07
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Expires: 1998-04-27
Abstract
Abstract A charcoal coated solid support of regular geometric form can be employed as an adsorbent device in a variety of biochemical assays to adsorb selected components for separation and easy removal from an assay medium.
Inventors
- 👤 Kue H. Chau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:59
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/536; G01N33/537; G01N33/538; B; B01; B01J; B01J20/00; B01J20/28; B01J20/28014; B01J20/28016; B01J20/28019; B01J20/281; B01J20/286; B01J20/30; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/321; B01J20/3212; B01J20/3231; B01J20/3234; B01J20/324; C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/372; G01N30/00; B01J2220/00; B01J2220/50; B01J2220/54
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
27 words
An adsorbent device for the separation of ligands from an assay medium by adsorption which comprises a solid support of regular geometric form coated with activated charcoal.
Claim 2
Dependent Claim
27 words
An adsorbent device for the separation of ligands from an assay medium by adsorption which comprises a solid support of regular geometric form coated with activated charcoal.
Claim 3
Dependent Claim
11 words
An adsorbent device according to claim 1 which is spherically shaped.
Claim 4
Independent Claim
30 words
A method for the separation of ligands from an assay medium which comprises adsorbing the ligands onto the adsorbent surface of an activated charcoal-coated solid support of regular geometric form.
Claim 5
Independent Claim
30 words
A method for the separation of ligands from an assay medium which comprises adsorbing the ligands onto the adsorbent surface of an activated charcoal-coated solid support of regular geometric form.
Claim 6
Dependent Claim
13 words
A method according to claim 3 wherein the solid support is spherically shaped.
Claim 7
Dependent Claim
96 words
A ligand binding assay for proteins in a physiological fluid which comprises: a. introducing an aliquot of the specimen to be assayed into a vial containing a labeled ligand and an activated charcoal-coated solid support of regular geometric form; b. allowing the contents of the vial to incubate; c. separating the solid phase containing unbound ligands adsorbed on the activated charcoalcoated solid support from the liquid phase containing protein bound ligand; and d. determining the quantity of labeled ligand in either phase which is a function of the degree of ligand binding in the sample fluid.
Claim 8
Dependent Claim
96 words
A ligand binding assay for proteins in a physiological fluid which comprises: a. introducing an aliquot of the specimen to be assayed into a vial containing a labeled ligand and an activated charcoal-coated solid support of regular geometric form; b. allowing the contents of the vial to incubate; c. separating the solid phase containing unbound ligands adsorbed on the activated charcoalcoated solid support from the liquid phase containing protein bound ligand; and d. determining the quantity of labeled ligand in either phase which is a function of the degree of ligand binding in the sample fluid.
References Cited (Backward Citations)
US3928553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-06 | 1986-03-08 | 1986-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-06 | 1990-03-08 | 1990-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-06 | 1994-03-08 | 1994-09-07 | $7700.00 | Window Closed / Lapsed |