| Patents for G01N 31 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroups; Apparatus specially adapted for such methods (18,554) |
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| 01/16/1990 | US4893477 Frozen foodstuffs thawing detector device |
| 01/11/1990 | WO1990000168A1 Improved methods of using chemiluminescent 1,2-dioxetanes |
| 01/10/1990 | EP0350254A2 Reducible compounds which provide leuco dyes, and analytical compositions, elements and methods containing same |
| 01/10/1990 | EP0350253A2 Reducible compounds which provide aniline dyes, and analytical compositions, elements and methods using same |
| 01/10/1990 | EP0349934A2 Process for the determination of the ionic strength or the specific gravity of queous fluids |
| 01/10/1990 | EP0349843A2 Composition and method of assaying aqueous liquids for specific gravity |
| 01/09/1990 | US4892937 Analyzing body fluids for lithium |
| 01/09/1990 | US4892677 Defrost indicator |
| 01/03/1990 | EP0348826A2 Isobenzothiazolone chromogenic thiol indicators and their derivatives |
| 01/02/1990 | US4891075 Chelate compound of dihydropyridine, lanthanide compound, amine, aldehyde and diketone |
| 12/27/1989 | EP0347657A2 Wetness indicating hot-melt adhesives |
| 12/27/1989 | CN2050168U Oxygen content testing instrument sampling tube |
| 12/26/1989 | US4889814 Through a gas-chromatographic separation column over a bed of mercuric oxide |
| 12/26/1989 | US4889755 Encapsulated liquids |
| 12/26/1989 | US4889407 Optical waveguide sensor and method of making same |
| 12/21/1989 | DE3919601A1 Device for acid-decomposition of a substance for elementary analysis under controlled pressure in a microwave field |
| 12/20/1989 | EP0346384A1 Method and system for determining organic matter in an aqueous solution. |
| 12/20/1989 | CN1038164A Scale plate of apparatus for measuring ionic concentration and the like and scale method thereof |
| 12/14/1989 | WO1989012045A1 Benzotriazole derivatives and reagents containing same for analyzing carboxylic acids |
| 12/13/1989 | EP0345782A2 Fluid analysis with particulate reagent suspension |
| 12/13/1989 | EP0345781A2 Defined volume test device |
| 12/13/1989 | EP0345582A2 Composition and method of assaying for trace amounts of proteins |
| 12/07/1989 | DE3818783A1 Device for recognising faulty intubation during intubation anaesthesia |
| 11/30/1989 | WO1989011652A1 Colorimetric assay of 2-bromo-2-nitro-1,3-propanediol or derivatives thereof |
| 11/30/1989 | WO1989011643A1 Reducible indicators containing pyrogallol and use thereof |
| 11/30/1989 | DE3817039C1 Method for the rapid characterisation of alkyl polyglycosides |
| 11/30/1989 | DE3814548C1 Method of determining traces of organically bound pollutants on small amounts of sample and apparatus for carrying out the method |
| 11/29/1989 | EP0343261A1 Dissolution testing machine |
| 11/29/1989 | CN2048585U Hydrogen phosphide pha, phb, phc series detecting tube |
| 11/29/1989 | CN2048584U Simple rapid nitrogen detector |
| 11/28/1989 | US4883643 Oxygen sensor protected against contaminants |
| 11/23/1989 | EP0342891A1 Fluorescent intracellular calcium indicators |
| 11/23/1989 | EP0342783A2 A disposable test pack |
| 11/23/1989 | DE3816074A1 Process for determining lead in strongly contaminated aqueous solutions, without measures for separation and/or enrichment |
| 11/21/1989 | US4882286 Digestion apparatus useful for a kjeldahl method |
| 11/21/1989 | US4882285 Process for monitoring the quantity of dimethyl hydantoin |
| 11/21/1989 | CA1263074A1 Mount for ammonia-sensitive test elements |
| 11/16/1989 | DE3914392A1 Method and device for multielement material analysis |
| 11/15/1989 | EP0341249A1 Developing system and a method of using the developing system for detection of carboxylic acids. |
| 11/15/1989 | CN1037216A Quantitative carbon dioxide detector |
| 11/14/1989 | US4880749 Barium sulfate in polymer |
| 11/09/1989 | DE3814230A1 Verfahren und vorrichtung zum nachweis von nitrat Method and device for the detection of nitrate |
| 11/08/1989 | CN1005713B Synthesis of fromo-azo-phosphines (psn), a color producing reagent for the determination of total amount of rare earth |
| 11/07/1989 | US4879246 Method and device for mineralization of carbonaceous material |
| 11/07/1989 | US4879243 Use of substituted ortho-quinones as electron transfer agents in analytical determinations |
| 11/07/1989 | US4878971 Method of continuously assembling chemical analysis slides |
| 11/07/1989 | EP0263875A4 Multiple control standard for blood analysis. |
| 11/02/1989 | WO1989010561A1 Process and device for the qualitative and quantitative analysis of nitrate ions |
| 11/02/1989 | EP0340018A2 Composition, apparatus and method for sensing ionic components |
| 11/02/1989 | EP0339561A2 Impurity measuring method |
| 11/02/1989 | EP0339463A2 Impurity measuring method and apparatus |
| 11/02/1989 | EP0339450A2 Test strip for the analysis of a sample liquid, process for conducting such an analysis and process for its preparation |
| 11/02/1989 | EP0339277A1 Reaction vessel for performing sequential analytical assays |
| 11/01/1989 | CN1036775A Polyacrylamide gels and method for preparation of polyacrylamide gels |
| 10/31/1989 | US4877743 Monitoring reaction of nitrous oxide to form nitrogen |
| 10/31/1989 | US4877579 Multilayer device for detecting bilurubin |
| 10/24/1989 | US4876068 Test kit for colorimetric analysis |
| 10/24/1989 | US4876067 Multilayer test strip device with a dissolvable reagent layer |
| 10/24/1989 | CA1262432A1 Sealed reagent matrix |
| 10/19/1989 | DE3811698A1 Air pump for detector tubes |
| 10/18/1989 | EP0337053A1 Teststrip to determine the oxygen concentration in a fluid and method to prepare it |
| 10/18/1989 | EP0336986A1 Polyacrylamide gels |
| 10/17/1989 | US4874709 Using a fatty alcohol as a solvent and solubilizers |
| 10/17/1989 | US4874692 Binder composition and analytical element having stabilized peroxidase in layer containing the composition |
| 10/11/1989 | EP0336827A1 Method for the detection of narcotic traces and products for use in this method |
| 10/11/1989 | EP0336483A1 A process and device for the separation of a body fluid from particulate materials in said fluid and testing kit for said separation and analysis of the body fluid. |
| 10/11/1989 | CN1036262A Mfg. heat-sensitive indicator for autoclaving |
| 10/10/1989 | US4873197 Quick color test to detect lead release from glazed ceramic and enameled metal ware |
| 10/10/1989 | US4873126 System and process for spotting reagents on porous supports |
| 10/10/1989 | US4873057 Apparatus for carrying out a titration procedure for the chemical analysis of a sample |
| 10/10/1989 | US4872956 Methods of measuring ion-concentration and the like and a calibrating sheet as well as a calibrating method of measuring devices used therein |
| 10/05/1989 | WO1989009400A1 Light emitting probe complex for measuring ph and method of ph measurement |
| 10/05/1989 | WO1989009078A1 Quantitative carbon dioxide detector |
| 10/04/1989 | EP0335859A2 Device for determining components in a sample |
| 10/03/1989 | US4871681 Forming red cyanide-picric acid complex, measuring absorbency |
| 10/03/1989 | US4871678 O-cresolphthalein complexone, acid, sulfonic acid amine zwitterionic buffer |
| 10/03/1989 | US4871513 Test medium and method for detecting phosphorus segregates in metallic material |
| 10/03/1989 | CA1262093A1 Steroidal liposomes |
| 09/28/1989 | DE3809096A1 Method and apparatus for determining the specific evaporation behaviour of organic substances in thermal treatments |
| 09/27/1989 | EP0334668A1 Paper chemical agent detectors |
| 09/26/1989 | US4869787 Gold electrodes, accuracy |
| 09/26/1989 | CA1261720A1 Combined sensor device for detecting toxic gases |
| 09/26/1989 | CA1260811A1 Method for continuously analysing total gaseous mercury |
| 09/26/1989 | CA1260063A1 Test strip identification |
| 09/21/1989 | WO1989008828A1 Measuring halogenated organic compounds in soil |
| 09/20/1989 | EP0333286A1 Device for determining the presence of organic materials by colorimetric indication |
| 09/20/1989 | EP0332935A1 Sensor material for the measurement of the partial pressure of gases or vapours, and gas sensor |
| 09/19/1989 | US4867946 Device for evaluating test strips |
| 09/19/1989 | US4867919 Method of making a gas sensor |
| 09/13/1989 | EP0332444A1 Reagent for diagnosis of cancer |
| 09/12/1989 | US4865995 Method for measuring a concentration of saccharides having a low molecular weight and sensor for measuring the same |
| 09/12/1989 | US4865992 System and method for quantitative analysis of a solution |
| 09/08/1989 | WO1989008253A1 Method and apparatus for determining the ability of heavy fuels to self-ignite under diesel conditions |
| 09/08/1989 | WO1989007957A1 Co2 indicator for placement of tracheal tubes |
| 09/08/1989 | WO1989007956A1 Carbon dioxide detection |
| 09/06/1989 | EP0331165A2 A color comparison device having a color sample-bonding wheel which permits easy removal of a color sample sticker |
| 09/06/1989 | EP0331065A2 New indicator compounds, method of their preparation and use of those compounds in an iron assay system |
| 09/06/1989 | CN2044073U Combined flow injection analyser |
| 09/05/1989 | US4863867 Gas permeable bio-test pack |
| 09/05/1989 | US4863694 Chemically sensitive component |