US4931402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photometric analysis equipment
Assignee: TECAN AG ANALYTISCHE INSTRUMENTE CH-8634 HOMBRECHTIKON SWITZERLAND A CORP OF SWITZERLAND
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Filing: 1987-02-27
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Granted: 1990-06-05
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Expires: 2007-02-27
Abstract
Abstract A photometric analyzer includes a primary rack (1) for holding a number of sample tubes (2), and a work table (3) located alongside the primary rack (1) for supporting a microtitration plate (4), the work table being positionable in any x/y direction desired in a horizontal plane. A sample distribution arm (5) is located above the primary rack (1) and the work table and can be positioned in any x/y direction in the horizontal plane. A photometer (6) is located in the positioning sector of the work table (3) whose beam path (7) vertically intersects the x/y plane of the work table (3). A programmable computer (8) is provided for controlling the entire photometric analysis equipment. The device is particularly suitable for performing enzyme immune tests.
Inventors
- 👤 Heinz Abplanalp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:20
CPC Classifications
G; G01; G01N; G01N35/00; G01N35/10; G01N35/1081; G01N35/109
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
Photometric analyzer, in particular for performing enzyme immune tests, characterized by a primary rack for holding a variety of sample tubes; a work table located alongside the primary rack for supporting a microtitration plate 4 wherein the work table can be positioned in any x/y direction desired in a horizontal plane; a sample distribution arm which is located above the primary rack and the work table and which can be positioned in any x/y direction in a horizontal plane; a photometer fixedly located in the positioning sector of the work table whose beam path vertically intersects the x/y plane of the work table; and a programmable computer for controlling the entire photometric analysis equipment.
Claim 2
Dependent Claim
114 words
Photometric analyzer, in particular for performing enzyme immune tests, characterized by a primary rack for holding a variety of sample tubes; a work table located alongside the primary rack for supporting a microtitration plate 4 wherein the work table can be positioned in any x/y direction desired in a horizontal plane; a sample distribution arm which is located above the primary rack and the work table and which can be positioned in any x/y direction in a horizontal plane; a photometer fixedly located in the positioning sector of the work table whose beam path vertically intersects the x/y plane of the work table; and a programmable computer for controlling the entire photometric analysis equipment.
Claim 3
Dependent Claim
34 words
Photometric analyzer in accordance with claim 1 characterized by a multiple head with a suction and/or reagent release function which is located above the work table and can move in the vertical direction z.
Claim 4
Dependent Claim
23 words
Photometric analyzer in accordance with claim 2 characterized by an incubator for holding one or more microtitration plates and having a lift mechanism.
Claim 5
Dependent Claim
29 words
Photometric analyzer in accordance with claim 3 characterized by the fact that the sample distribution arm bears a single channel pipette which can be moved in the vertical direction.
Claim 6
Dependent Claim
37 words
Photometric analyzer in accordance with claim 4 characterized by the fact that the multiple head, which preferably is designed as a double four-way head, has a four-way peristalsis for reagent release and/or a four-way peristalsis for suction.
Claim 7
Dependent Claim
22 words
Photometric analyzer in accordance with claim 5 characterized by the fact that the microtitration plate is designed as a flat base plate.
Claim 8
Dependent Claim
22 words
Photometric analyzer in accordance with claim 6 characterized by having a rinse fluid trough located below the path of the work table.
References Cited (Backward Citations)
FR46430E
Cited
US3687632A
Cited
EP0025350A2
Cited
US4322216A
Cited
US4584275A
Cited
US4613573A
Cited
US4724215A
Cited
US4678752A
Cited
US4785407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-04 | 1993-12-04 | 1994-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-04 | 1997-12-04 | 1998-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-04 | 2001-12-04 | 2002-06-05 | $7700.00 | Window Closed / Lapsed |