US4992377A
Expired / Lapsed
US
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Article for carrying out biological or chemical procedures containing magnetically responsive material
Assignee: SAXHOLM AS
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Filing: 1988-04-19
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Granted: 1991-02-12
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Expires: 2008-04-19
Abstract
Abstract A biologically or chemically active substance is incorporated in a unitary body with a magnetically responsive material for carrying out a specific biological or chemical procedure. This may be microbiological, immunological, serological or other biochemical examinations. The body is applied against a substrate or medium by application of an external magnetic field and a reaction region is produced at the site of the body and is measured by a reader. The magnetically responsive material is provided in a form distributed in the body so that application of the external magnetic field will be applied substantially uniformly on the body. The distributed form of the magnetically responsive material in the body corresponds substantially to the shape of the body.
Inventors
- 👤 Rolf Saxholm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:19
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; C; C12; C12M; C12M23/00; C12M23/02; C12M23/10; C12M35/00; C12M35/06; C12M41/00; C12M41/46; C12Q; C12Q1/00; C12Q1/02; C12Q1/04; C12Q1/18; G01N33/50; G01N33/53; G01N33/543; G01N33/54313; G01N33/54326; G01N2800/00; G01N2800/52; G01N35/00; G01N35/0098; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/808
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
The combination comprising: an article for carrying out a specific biological or chemical procedure, said article comprising a dose of an active substance which may react with an agent of a medium by diffusion therewith when the article is brought into contact with the medium, said dose being constituted of a specific material in a particular quantity to carry out the specific biological or chemical procedure, and metallic magnetically responsive means incorporated with said dose as a unitary body; and means for applying a magnetic force to said metallic magnetically responsive means to achieve said specific biological or chemical procedure, said metallic magnetically responsive means being in a form distributed in said article so that application of said magnetic force will be applied substantially uniformly on said article, the distributed form of said metallic magnetically responsive means in said article corresponding substantially to the shape of said article.
Claim 2
Dependent Claim
148 words
The combination comprising: an article for carrying out a specific biological or chemical procedure, said article comprising a dose of an active substance which may react with an agent of a medium by diffusion therewith when the article is brought into contact with the medium, said dose being constituted of a specific material in a particular quantity to carry out the specific biological or chemical procedure, and metallic magnetically responsive means incorporated with said dose as a unitary body; and means for applying a magnetic force to said metallic magnetically responsive means to achieve said specific biological or chemical procedure, said metallic magnetically responsive means being in a form distributed in said article so that application of said magnetic force will be applied substantially uniformly on said article, the distributed form of said metallic magnetically responsive means in said article corresponding substantially to the shape of said article.
Claim 3
Dependent Claim
29 words
The combination as claimed in claim 1 wherein said means which applies magnetic force serves to urge said dose aainst said medium and into active association with said agent.
Claim 4
Dependent Claim
23 words
The combination as claimed in claim 1 wherein said means, which applies magnetic force serves to remove said unitary body from said medium.
Claim 5
Dependent Claim
171 words
The combination comprising: an article for carrying out a specific biological or chemical procedure, said article comprising a dose of an active substance which may react with an agent of a medium by diffusion therewith when the article is brought into contact with the medium, said dose being constituted of a specific material in a particular quantity to carry out the specific biological or chemical procedure, and metallic magnetically response means incorporated with said dose as a unitary body; and means for applying a magnetic force to said metallic magnetically responsive means to urge said dose against said medium and into active association with said agent and to remove said unitary body from said medium to achieve said specific biological or chemical procedure, said metallic magnetically responsive means being in a form distributed in said article so that application of said magnetic force will be applied substantially uniformly on said article, the distributed form of said metallic magnetically responsive means in said article corresponding substantially to the shape of said article.
Claim 6
Dependent Claim
171 words
The combination comprising: an article for carrying out a specific biological or chemical procedure, said article comprising a dose of an active substance which may react with an agent of a medium by diffusion therewith when the article is brought into contact with the medium, said dose being constituted of a specific material in a particular quantity to carry out the specific biological or chemical procedure, and metallic magnetically response means incorporated with said dose as a unitary body; and means for applying a magnetic force to said metallic magnetically responsive means to urge said dose against said medium and into active association with said agent and to remove said unitary body from said medium to achieve said specific biological or chemical procedure, said metallic magnetically responsive means being in a form distributed in said article so that application of said magnetic force will be applied substantially uniformly on said article, the distributed form of said metallic magnetically responsive means in said article corresponding substantially to the shape of said article.
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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) | 1994-02-11 | 1994-08-13 | 1995-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-11 | 1998-08-13 | 1999-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-11 | 2002-08-13 | 2003-02-12 | $7700.00 | Window Closed / Lapsed |