US4238449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reagent holder
Assignee: Lonza Walkersville Inc
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Filing: 1979-05-21
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Granted: 1980-12-09
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Expires: 1999-05-21
Abstract
Abstract A reagent holder for fluoro immunoassays with two examination surfaces on opposite sides and a resiliently deformable detent operable to retain the reagent holder in an examination location regardless of which side is being examined.
Inventors
- 👤 Fred H. Deindoerfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:29
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/5302; G01N33/5304
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
In an elongated diagnostic reagent holder having front and rear sides, an elongated shaft, a diagnostic surface area on the front side of the holder near one end of the shaft for supporting an immunofluorescent sample, and a cam surface on one side of the shaft adapted to engage a retainer in a receiver for the reagent holder to retain the reagent holder at an examination position in the receiver, the improved reagent holder having, a. a second diagnostic surface area on the back side of the holder opposite to the first diagnostic surface area for supporting a second immunofluorescent sample, and b. a second cam surface on the second side of the shaft opposite to the first cam surface for retaining the reagent holder at the examination position during examination of the second diagnostic surface area with the shaft having a flexibly mounted wedge shaped portion thereof with the first and second cam surfaces on opposite sides thereof whereby each of the cam surfaces may be inclined to the length of the shaft while the other cam surface is generally parallel to the shaft.
Claim 2
Dependent Claim
185 words
In an elongated diagnostic reagent holder having front and rear sides, an elongated shaft, a diagnostic surface area on the front side of the holder near one end of the shaft for supporting an immunofluorescent sample, and a cam surface on one side of the shaft adapted to engage a retainer in a receiver for the reagent holder to retain the reagent holder at an examination position in the receiver, the improved reagent holder having, a. a second diagnostic surface area on the back side of the holder opposite to the first diagnostic surface area for supporting a second immunofluorescent sample, and b. a second cam surface on the second side of the shaft opposite to the first cam surface for retaining the reagent holder at the examination position during examination of the second diagnostic surface area with the shaft having a flexibly mounted wedge shaped portion thereof with the first and second cam surfaces on opposite sides thereof whereby each of the cam surfaces may be inclined to the length of the shaft while the other cam surface is generally parallel to the shaft.
References Cited (Backward Citations)
US3999948A
Cited
US4144452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |