| 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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| 01/22/1980 | US4184920 Useful as indicator for efficiency of enzyme |
| 01/22/1980 | US4184850 Diagnostic agent for the detection of ketone bodies in fluids and process for its manufacture |
| 01/22/1980 | US4184445 Soil moisture signaling device |
| 01/15/1980 | US4183728 Process for determining the ozone content of ozone-containing gas mixtures |
| 01/08/1980 | CA1069420A2 Integral element for analysis of liquids |
| 01/08/1980 | CA1069419A1 Integral analytical element |
| 01/01/1980 | CA1068930A Chemical analysis of ions incorporated in lattices using coherent excitation sources |
| 12/25/1979 | US4180440 Variable endpoint analyzer |
| 12/25/1979 | US4180009 Ion concentration testing apparatus |
| 12/13/1979 | WO1979001081A1 Test strips for analysing dissolved substances |
| 12/11/1979 | CA1067959A2 Stoichiometric air/fuel ratio exhaust gas sensor |
| 12/11/1979 | CA1067805A1 Method for quantitative analysis of l-lysine in proteinaceous test substances |
| 12/11/1979 | CA1067720A1 Pyrolyzing apparatus for determining particulate matter in tobacco smoke |
| 11/28/1979 | EP0005519A2 Quick test for the determination of ammonia or of substrates liberating ammonia in reactions |
| 11/28/1979 | EP0005518A2 Bis-(2,4-dinitrophenyl)-methyl-pyridinium compounds, methods for their preparation and their use as pH indicators |
| 11/27/1979 | US4176031 Digital hypochlorous acid analyzer |
| 11/20/1979 | US4175207 Tetraalkali salts of 3,3',4,4'-benzophenone tetracarboxylic acid |
| 11/13/1979 | US4174202 Kit and method for testing liquids for hydrogen sulfide content |
| 11/13/1979 | CA1066141A1 Method and device for monitoring vapor concentration at a phase interface |
| 10/31/1979 | EP0004857A2 Process and means for removing turbidities |
| 10/30/1979 | US4172705 Process and apparatus for sulfur analysis |
| 10/18/1979 | WO1979000802A1 New ester compounds of muramyl-peptide and applications thereof to pharmaceutical compositions and laboratory reacta |
| 10/16/1979 | CA1064244A1 Method of tagging with color-coded microparticles |
| 10/09/1979 | US4170523 Method for checking isolation between titration and electrochemical measuring systems of a chemical analyzer |
| 10/09/1979 | US4170455 Quantitative analysis by detecting temperature differences in gaseous stream |
| 10/09/1979 | CA1063829A1 Quantitative detection of sulfur compounds by flame photometry |
| 10/09/1979 | CA1063826A1 Test device and method for determining blood hemoglobin |
| 10/02/1979 | US4169811 Oxygen indicator |
| 09/25/1979 | CA1063002A1 Method and apparatus for analyzing gaseous mixtures |
| 09/11/1979 | CA1062135A1 Time-temperature history indicators |
| 09/04/1979 | US4166804 Polymeric color indicators and a method of their preparation |
| 09/04/1979 | US4166721 Monitoring concentration of component at selected locations |
| 08/28/1979 | US4166105 Dye tagged reagent |
| 08/28/1979 | US4165646 Adjustable micro-dispensing liquid pipet |
| 08/21/1979 | US4165219 Analysis of solutions using chromatographic column |
| 08/21/1979 | US4165218 Monitoring surfactant in electrolyte during metal treatment |
| 08/21/1979 | CA1060906A1 3,3',5,5'-tetraalkylbenzidines and their use as indicators in diagnostic agents |
| 07/31/1979 | CA1059527A1 Sensitive ph indicator |
| 07/31/1979 | CA1059413A1 Device for testing solutions and body fluids |
| 07/31/1979 | CA1059412A1 Sterility indicator |
| 07/24/1979 | CA1058907A1 Apparatus for measuring amount of organic carbon in aqueous solution |
| 07/10/1979 | US4160802 Instrument for the automated determination of organic halogens |
| 07/03/1979 | US4160008 Multilayered test device for determining the presence of a liquid sample component, and method of use |
| 06/19/1979 | CA1056704A1 Method for quantitatively analyzing substances containing elements other than carbon, hydrogen and oxygen and volatile organic compounds |
| 06/13/1979 | EP0002186A1 Disintegrating pressure device |
| 06/12/1979 | CA1056282A1 Multilayer analytical elements for use in the assay of cholesterol |
| 06/05/1979 | US4157040 Apparatus for collecting pyrolysates from a gas-cooled dynamoelectric machine |
| 06/05/1979 | CA1055824A1 Diagnostic agent for the detection of protein in body fluids |
| 05/31/1979 | WO1979000306A1 Determination of ldl cholesterol in body fluids |
| 05/29/1979 | CA1055405A Method for prolonging the breakthrough of volatile substances through adsorbent-containing air purifying devices |
| 05/15/1979 | US4154795 Microtest plates |
| 05/15/1979 | US4154794 Gas detector |
| 05/15/1979 | US4154586 Respirator cartridge end-of-service lift indicator system and method of making |
| 05/08/1979 | CA1054035A1 Biological fluid tests strip |
| 05/08/1979 | CA1054034A1 Multilayer analytical element |
| 05/08/1979 | CA1053926A1 Carbon monoxide detection apparatus and method |
| 05/01/1979 | US4152118 Copper mercaptides as sulfur dioxide indicators |
| 05/01/1979 | US4152117 Process for the quantitative analysis of organoaluminum compounds in their solutions |
| 05/01/1979 | US4152116 Composition and method for the determination of ascorbic acid |
| 04/24/1979 | CA1053235A1 1-(4,4-diphenylbutyl)-4-piperidinyl)-1,3-dihydro-2h-benzimidazol-2 one compounds |
| 04/24/1979 | CA1053132A1 Apparatus, composition and method for detecting free water in hydrocarbon fuels |
| 04/18/1979 | EP0001513A1 Process and catalyst for determining nitrogen in a sample according to the Kjeldahl principle |
| 04/17/1979 | US4149852 Thermochromic composition, method of making, and use |
| 04/17/1979 | CA1052677A1 Method and apparatus for rapid evaluation of the oil producing potential from geological strata, through minimal sampling |
| 04/10/1979 | US4148608 Burning sample to obtain tritiated water and radioactive carbon dioxide |
| 04/10/1979 | CA1052243A1 Test composition, device, and method for the detection of peroxidatively active substances |
| 04/03/1979 | CA1051760A1 Device and method for the determination of the specific gravity or osmolality of a liquid |
| 03/22/1979 | WO1979000122A1 Identification of hazardous nature of unknown materials |
| 03/21/1979 | EP0001137A1 Fluid-treatment device |
| 03/20/1979 | US4145186 Sterilization detection device and method |
| 03/13/1979 | US4144306 Assay of amylase |
| 03/13/1979 | US4144032 Personal dosimeter and method of use |
| 03/06/1979 | US4143080 Water soluble iodide, redox catalyst, stabilizer in specific concentrations for photometric determinations |
| 03/06/1979 | US4142938 Atp, nad, colorless tetrazolium dye, glycerol kinase, glycerol-1-phosphate dehydrogenase; colorimetric analysis |
| 03/06/1979 | CA1049910A1 Integral element for analysis of liquids |
| 02/27/1979 | US4141688 Composition, device and method for determining reducing agents |
| 02/27/1979 | US4141687 Automatic apparatus and method for the assay of fluid samples |
| 02/27/1979 | CA1049403A1 Reagent for the detection of syphilis |
| 02/27/1979 | CA1049401A1 Method and apparatus for detecting immunologic reactions by diffusion in gel |
| 02/27/1979 | CA1049386A1 Method and apparatus for analysis of constituent carried in fibrous medium |
| 02/27/1979 | CA1049288A1 Time temperature integrating indicator |
| 02/20/1979 | US4140611 For emission control device, exhaust gas |
| 02/20/1979 | CA1048913A1 Solid state method and apparatus for measuring so2 |
| 02/20/1979 | CA1048810A1 Method and apparatus for nox analysis |
| 02/06/1979 | US4138415 Curing agents, chelating agents, antitumor agents |
| 02/06/1979 | US4138216 Device for monitoring ethylene oxide sterilization process |
| 01/23/1979 | CA1047036A1 Purification of fluorescers |
| 01/23/1979 | CA1046913A1 Titration apparatus and method therefor |
| 01/09/1979 | US4133641 Combustion cone for chemical analysis instrument |
| 01/02/1979 | US4132615 Internal combustion engine exhaust gas oxygen sensor and catalyzer combination |
| 01/02/1979 | US4132528 Improved biuret reagent composition for protein analysis |
| 12/26/1978 | US4131430 Reacting with an acidic solution of o-phthalaldehyde and a substituted 1-naphthylamine |
| 12/26/1978 | US4131429 Urea assay |
| 12/26/1978 | US4131425 Urea assay |
| 12/20/1978 | EP0000066A1 Determination of aromatic aminocarboxylic acids. |
| 12/19/1978 | US4130760 Reusable radiation monitor |
| 12/19/1978 | US4130758 Device for determining gaseous components |
| 12/19/1978 | US4130396 Method for the quantitative analysis of Al-C- and Al-H- bonds in hydrocarbons |
| 12/19/1978 | US4130012 Soil moisture indicator |
| 12/12/1978 | US4129479 Ammonia content |