US4090850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for use in radioimmunoassays
Assignee: Bracco International BV
•
Filing: 1976-11-01
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Granted: 1978-05-23
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Expires: 1996-11-01
Abstract
Abstract Antibody coated cellulose paper can be used in radioimmunoassays in conjunction with test apparatus comprising a receptacle tray with multiple wells, each of said wells having at its bottom an orifice of such size and shape as to retain liquids used in the procedure under given pressure conditions and permit the evacuation of said liquid under reduced pressure.
Inventors
- 👤 Ching-Hong Chen
- 👤 Horng-Mou Tsay
- 👤 Robert E. Heyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:57
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/502; B01L3/5025; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/53; G01N33/5302; G01N33/5304; Y; Y10; Y10S; Y10S436/00; Y10S436/807; Y10S436/809
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
72 words
Apparatus for use in a radioimmunoassay test procedure comprising a receptacle tray having multiple wells, each of said wells having at its bottom an orifice of such size and shape as to retain the liquids used in the radioimmunoassay under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, and structure adapted to surround the outlets of said orifices with an environment of reduced pressure.
Claim 2
Dependent Claim
72 words
Apparatus for use in a radioimmunoassay test procedure comprising a receptacle tray having multiple wells, each of said wells having at its bottom an orifice of such size and shape as to retain the liquids used in the radioimmunoassay under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, and structure adapted to surround the outlets of said orifices with an environment of reduced pressure.
Claim 3
Dependent Claim
18 words
Apparatus in accordance with claim 1 wherein the orifice is in the shape of an inverted conical frustrum.
Claim 4
Dependent Claim
95 words
Apparatus in accordance with claim 1 for use in a radioimmunoassay test procedure comprising a rectangular prism structure with rounded corners, having multiple wells protruding into its interior from one side, each of said wells having at its bottom an orifice of such size and shape as to retain the liquids used in the radioimmunoassay under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, said structure having an orifice at or near its bottom through which air can be pulled creating an evacuated condition within the structure.
Claim 5
Dependent Claim
90 words
Apparatus for use in a radioimmunoassay test procedure comprising a receptacle tray having multiple wells, each of said wells containing an antibody coated cellulose paper that is pervious to the liquids used in the radioimmunoassay procedure and each of said wells having at its bottom an orifice of such size and shape as to retain the liquids under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, and structure adapted to surround the outlets of said orifices with an environment of reduced pressure.
Claim 6
Dependent Claim
90 words
Apparatus for use in a radioimmunoassay test procedure comprising a receptacle tray having multiple wells, each of said wells containing an antibody coated cellulose paper that is pervious to the liquids used in the radioimmunoassay procedure and each of said wells having at its bottom an orifice of such size and shape as to retain the liquids under given pressure conditions and permit the evacuation of said liquids through said orifices at reduced pressure, and structure adapted to surround the outlets of said orifices with an environment of reduced pressure.
Claim 7
Dependent Claim
27 words
Apparatus in accordance with claim 4 wherein the antibody coated cellulose paper is in the shape of a disc and has a plastic support circumscribing its periphery.
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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) | 1981-05-22 | 1981-11-21 | 1982-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-22 | 1985-11-21 | 1986-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-22 | 1989-11-21 | 1990-05-23 | $7700.00 | Window Closed / Lapsed |