1
Glen Marshall Dappen: Glucose detection system free from fluoride-ion interference. Eastman Kodak Company, Arthur L Girard, July 4, 1978: US04098574 (273 worldwide citation)

An improved multilayer element for detecting glucose in samples of biological fluid which may contain with fluoride ion as a contaminant or preservative is described. The improved element comprises a buffered Trinder's reagent, which reagent comprises glucose oxidase, peroxidase, 4-aminoantipyrine a ...


2
Anders O Grubb, Ulla C Glad: Immunoassay with test strip having antibodies bound thereto. Kabi, A A Orlinger, September 18, 1979: US04168146 (267 worldwide citation)

A test strip for carrying out immunoassays. The test strip is a bibulous carrier to which antibodies are bound. The immunoassay is carried out by wetting the test strip with the aqueous solution containing a suspected antigen. The test strip is then contacted with an aqueous solution containing labe ...


3
David J Litman, Edwin F Ullman: Test strip kits in immunoassays and compositions therein. Syva Company, Bertram I Rowland, July 5, 1983: US04391904 (243 worldwide citation)

An assay method and compositions are provided for determining the presence of an analyte in a sample. The analyte is a member of an immunological pair (mip) of immunogens--ligand and receptor. The method has two basic elements: a solid surface to which one of the members of the immunological pair is ...


4
John Figueras: Element for analysis of liquids. Eastman Kodak Company, Ronald P Hilst, March 13, 1979: US04144306 (167 worldwide citation)

A multilayer analytical element for the analysis of liquids, particularly small samples of biological liquids, having at least two layers including a reagent layer and a registration layer. The reagent layer contains an interactive composition including a nondiffusible material having a preformed de ...


5
Joseph F Pagano: Specimen test slide. SmithKline Corporation, Smith Harding Earley & Follmer, December 7, 1976: US03996006 (123 worldwide citation)

A specimen test slide has a front panel and a rear panel. The front panel has a plurality of openings. Sheet means underlie each of these openings for the reception of a specimen. The portion of the sheet under each opening carries a test reagent. A hinged cover overlies the openings. The rear panel ...


6
Thomas M Watlington IV: Registration device for blood test strips. Boehringer Mannheim Corporation, Perman & Green, January 10, 1989: US04797256 (84 worldwide citation)

A ring-shaped registration device for receiving and holding an activated test strip having a reagent area adapted to receive a blood sample. The registration device is slidably received on the outer peripheral surface of a cylindrical vial on which markings to indicate a range of possible results wh ...


7
Ivar Giaever: Method and apparatus for detection of antibodies and antigens. General Electric, Morgan Finnegan Pine Foley & Lee, October 18, 1977: US04054646 (84 worldwide citation)

Method and apparatus for the detection of antibodies and antigens based upon the effect that any arbitrary antigen will adsorb onto a substrate in a monomolecular layer only, but that a corresponding specific antibody for such arbitrary antigen will bond thereto to form a bimolecular layer on the su ...


8
Betts Cleo Elmer, Marsh John Kendall: Test system. Miles Laboratories, Caruso George R, September 23, 1975: US3907503 (82 worldwide citation)

A test system for the semi-automatic analysis of chemical constituents in a test fluid which comprises test devices having test reagents and code means associated therewith and an instrument which receives the test devices and is programmed by the device code means for automatically reading the part ...


9
Donald F Halpern: Method and indicator for detecting the loss of integrity of a package. Bio Medical Sciences, Anthony Lagani Jr, July 4, 1978: US04098577 (72 worldwide citation)

A system for indicating the integrity of a normally sealed package utilizes a sensor containing a pH sensitive dye which displays a first color in equilibrium with normal atmospheric conditions and a second color when in equilibrium with an artificial atmosphere comprising an acidic gaseous material ...


10
Joseph P Tratnyek: Visual chemical indicating composition for monitoring sterilization. American Sterilizer Company, Robert D Yeager, October 4, 1983: US04407960 (65 worldwide citation)

An indicator system and device for visually monitoring ethylene oxide sterilization by color changes of the indicating composition of the system upon sufficient and properly conditioned exposure of the composition to ethylene oxide provides a controlled method for indicating the effective sterilizat ...