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Class Information
Number: 436/169
Name: Chemistry: analytical and immunological testing > Optical result > With reagent in absorbent or bibulous substrate
Description: Subject matter wherein the material to be analyzed is reacted with a reagent contained in absorbent or bibulous carrier or substrate.










Sub-classes under this class:

Class Number Class Name Patents
436/170 Plural superposed layers 370


Patents under this class:
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Patent Number Title Of Patent Date Issued
5340746 Composite reactive articles for the determination of cyanide Aug. 23, 1994
5334502 Method of collecting, identifying, and quantifying saliva Aug. 2, 1994
5334538 Gold sol immunoassay system and device Aug. 2, 1994
5332548 Analytical device and method of using same Jul. 26, 1994
5330715 Multilayer test device having fusion bonding attachment layer Jul. 19, 1994
5330917 Test swab device and method of detecting lead, mercury, arsenic, and bismuth Jul. 19, 1994
5328850 Merocyanine protein error indicators Jul. 12, 1994
5328852 Analytical assay Jul. 12, 1994
5320969 Method, composition and device for the semiquantitative determination of specific gravity of a test sample Jun. 14, 1994
5310646 Method for the detection of mucopolysaccharide storage diseases May. 10, 1994
5308581 Substance of an optical fluorescence measuring arrangement for measuring the pH of a sample and optical sensor with such an indicator substance May. 3, 1994
5308775 Assay devices for concurrently detecting an analyte and confirming the test result May. 3, 1994
5304468 Reagent test strip and apparatus for determination of blood glucose Apr. 19, 1994
5302346 Test carrier for the determination of ions Apr. 12, 1994
5300439 Method, device, and composition for the assay of ions Apr. 5, 1994
5290514 Dry analysis element having a constant blank value and process for preparing the same Mar. 1, 1994
5290704 Method of detecting organic solvent vapors Mar. 1, 1994
5286450 Bilirubin assay using crosslinkable polymers Feb. 15, 1994
5286624 Integral multilayer analytical element for determination of ammonia or ammonia-producing substance Feb. 15, 1994
5284622 Test carrier for the analysis of fluids Feb. 8, 1994
5284770 Meter verification method and apparatus Feb. 8, 1994
5281393 Multilayered device containing a polymer-copper complex to control interference of biological substances in colorimetric test systems Jan. 25, 1994
5279790 Merocyanine and nitro or nitroso substituted polyhalogenated phenolsulfonephthaleins as protein indicators in biological samples Jan. 18, 1994
5279792 Staining kit for proteins and nucleic acids Jan. 18, 1994
5277870 Blood glucose reflectance meter including a null prompting means and a device for providing a constant brightness light Jan. 11, 1994
5278075 Test swab to detect a substance on a surface and method of making and using same Jan. 11, 1994
5275785 Test device for detecting an analyte in a liquid sample Jan. 4, 1994
5275955 Procedure for establishing the presence of live house-dust mites Jan. 4, 1994
5270209 Method for distinguishing cosmetic sticks containing water Dec. 14, 1993
5268145 Chemical substance-sensing element Dec. 7, 1993
5266219 Device and method for separating plasma from blood Nov. 30, 1993
5264180 Mobile reagents in an analyte assay in a self-contained apparatus Nov. 23, 1993
5264181 Occult blood testing device Nov. 23, 1993
5262330 Colorimetric methods and reagents for the assay of calcium in a test sample Nov. 16, 1993
5260025 Depositing a binder on a solid support Nov. 9, 1993
5260219 Method of determining nitrogen balance and fat loss for persons involved in diet and/or physical training program Nov. 9, 1993
5260221 Sample pad assay initiation device Nov. 9, 1993
5260222 Device and method for completing a fluidic circuit which employs a liquid expandable piece of bibulous material Nov. 9, 1993
5252293 Analytical slide with porous filter membrane Oct. 12, 1993
5250260 Tape for detecting hydrides Oct. 5, 1993
5246835 Method of diagnosing renal diseases Sep. 21, 1993
5246862 Method and apparatus for in-situ detection and determination of soil contaminants Sep. 21, 1993
5244631 Testing device Sep. 14, 1993
5242835 Method and apparatus for determining the concentration of oxygen Sep. 7, 1993
5240735 Method of manufacturing a test article for the determination of protein Aug. 31, 1993
5234813 Method and device for metering of fluid samples and detection of analytes therein Aug. 10, 1993
5231034 Cupric chloride assay for detection of analytes Jul. 27, 1993
5229299 Test devices and methods for determining halides in aqueous samples Jul. 20, 1993
5227310 Device and method for assay of liquid sample Jul. 13, 1993
5223220 Solid phase immunoassay device and method of making same Jun. 29, 1993

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