Patent FR1064435A successfully refreshed from Google Patents.
Patent US4320087A successfully refreshed from Google Patents.
US4320087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laboratory assay device
Assignee: Abbott Laboratories
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Filing: 1978-01-23
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Granted: 1982-03-16
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Expires: 1998-01-23
Abstract
Abstract A device useful in the performance of a variety of immunologic and biochemical assays which comprises a container enclosing a solid phase reagent with an adsorbent and a retaining means for prohibiting the removal of said solid phase reagent is disclosed. The device is particularly well adapted to perform heterogeneous immunoassays and to permit processing large numbers of said immunoassays by facilitating the separation of assay medium from the solid phase reagents.
Inventors
- 👤 Kue H. Chau
- 👤 Robert A. Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/543; G01N33/54366; B; B01; B01J; B01J2219/00; B01J2219/00274; B01J2219/00277; B01J2219/00457; B01J2219/00459; B01J2219/00468
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A device useful for conducting immunologic and biochemical assays which comprises: (a) a reaction vial having an opening for the introduction and removal of reagents; (b) an adsorbent solid phase freely movable within said vial; and (c) means integral with said vial and positioned proximal to said opening to retain and prohibit removal of said adsorbent solid phase but permitting removal of nonadsorbed reagents wherein the adsorbent solid phase is a support coated with activated charcoal.
Claim 2
Independent Claim
76 words
A device useful for conducting immunologic and biochemical assays which comprises: (a) a reaction vial having an opening for the introduction and removal of reagents; (b) an adsorbent solid phase freely movable within said vial; and (c) means integral with said vial and positioned proximal to said opening to retain and prohibit removal of said adsorbent solid phase but permitting removal of nonadsorbed reagents wherein the adsorbent solid phase is a support coated with activated charcoal.
Claim 3
Independent Claim
79 words
A device useful for conducting immunologic and biochemical assays which comprises: (a) a reaction vial having an opening for the introduction and removal of reagents; (b) an adsorbent solid phase freely movable within said vial; and (c) means integral with said vial and positioned proximal to said opening to retain and prohibit removal of said adsorbent solid phase but permitting removal of nonadsorbed reagents wherein the adsorbent solid phase is a polystyrene bead with a coating of activated charcoal.
Claim 4
Independent Claim
79 words
A device useful for conducting immunologic and biochemical assays which comprises: (a) a reaction vial having an opening for the introduction and removal of reagents; (b) an adsorbent solid phase freely movable within said vial; and (c) means integral with said vial and positioned proximal to said opening to retain and prohibit removal of said adsorbent solid phase but permitting removal of nonadsorbed reagents wherein the adsorbent solid phase is a polystyrene bead with a coating of activated charcoal.
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) | 1985-03-15 | 1985-09-14 | 1986-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-15 | 1989-09-14 | 1990-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-15 | 1993-09-14 | 1994-03-16 | $7700.00 | Window Closed / Lapsed |