ApplicationNo. 941667 filed on 09/08/1992
US Classes:436/514, INVOLVING DIFFUSION OR MIGRATION OF ANTIGEN OR ANTIBODY422/56, Having reagent in absorbent or bibulous substrate422/57, Having coated reagent422/58, In holder or container having special form435/805, TEST PAPERS435/970, TEST STRIP OR TEST SLIDE436/169, With reagent in absorbent or bibulous substrate436/170, Plural superposed layers436/518, INVOLVING AN INSOLUBLE CARRIER FOR IMMOBILIZING IMMUNOCHEMICALS436/527, Glass or silica436/530, Cellulose or derivative436/531, Carrier is synthetic resin436/805, OPTICAL PROPERTY436/810Tube, bottle, or dipstick
ExaminersPrimary: Scheiner, Toni R.
Assistant: Chin, Christopher L.
Attorney, Agent or Firm
Foreign Patent References
International ClassesG01N 033/543
AbstractAn immunochromatographic assay device for the detection of an analyte in a liquid sample, the device including a housing that contains an opening for the application of the liquid sample and multiple liquid permeable materials located in the housing that are adapted to receive, treat and facilitate the movement of the sample through the housing; preferably, a first liquid permeable material is adapted to receive the liquid sample; a second liquid permeable material is positioned under the first liquid permeable material; a third liquid permeable material is positioned above the second liquid material; means are provided to prevent liquid communication between the first and third liquid permeable materials; a wicking material, in fluid contact with the third liquid permeable material receives the sample; and reagents are positioned in the housing that display the results of the immunoassay.
Field of SearchStructured visual or optical indicator, per se
Having reagent in absorbent or bibulous substrate
Having coated reagent
In holder or container having special form
TEST STRIP OR TEST SLIDE
INVOLVING DIFFUSION OR MIGRATION OF ANTIGEN OR ANTIBODY
INVOLVING AN INSOLUBLE CARRIER FOR IMMOBILIZING IMMUNOCHEMICALS
Glass or silica
Cellulose or derivative
Carrier is synthetic resin
With reagent in absorbent or bibulous substrate
Plural superposed layers
Tube, bottle, or dipstick