| 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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| 02/26/1992 | CN1015665B Indicator device |
| 02/25/1992 | US5091800 Hydrophilic ion permeable polymer |
| 02/25/1992 | CA1296243C Controlled hue test device |
| 02/20/1992 | WO1992002804A1 A humidity indicator with an encapsulated sensor |
| 02/19/1992 | EP0471391A2 Determination of ions in fluids |
| 02/19/1992 | EP0471105A1 Rapid hair pH indication and solution therefor |
| 02/19/1992 | EP0471067A1 Method and apparatus for the determination of dissolved carbon in water |
| 02/18/1992 | US5089420 Composition, device and method of assaying for a peroxidatively active substance utilizing amine borate compounds |
| 02/18/1992 | US5089232 High speed analysis of small quantities |
| 02/12/1992 | EP0470820A2 System and method for measuring oxygen in the presence of halothane |
| 02/12/1992 | EP0470652A2 Method and composition for the determination of sodium ions in fluids |
| 02/12/1992 | EP0470565A1 Peptides with antigenic determinant characteristic for alpha 1-microglobulin |
| 02/12/1992 | CN2096071U Capsule for determining hydrogen dissolved in water |
| 02/11/1992 | US5087422 U-shaped cooling part containing coil condenser, different combustion chambers, burners, sample containers, separating receivers; modular assembly |
| 02/11/1992 | US5087421 A bilirubin-trapping layer of polymer based on an unsaturated quaternary ammonium salt, an unsaturated compound and a diene compound; immunoassay; accuracy |
| 02/11/1992 | US5086642 Test vessel device for testing an apparatus for measuring or detecting a gas |
| 02/11/1992 | CA2048858A1 System and method for measuring oxygen in the presence of halothane |
| 02/07/1992 | CA2048305A1 Peptides with a characteristic antigenic determinant for alphal-microglobulin |
| 02/05/1992 | EP0469445A1 Analytical element and process for its production |
| 02/04/1992 | US5086000 Reacting 2-halopyridine derivative with alkylenediamine, karl fischer reagent |
| 02/04/1992 | US5085802 Time temperature indicator with distinct end point |
| 02/04/1992 | CA1295219C Method and apparatus for detecting hydrogen-containing or hydrogen-reactive gases |
| 02/04/1992 | CA1295216C Rainbow test device |
| 01/29/1992 | EP0468777A2 Method for bonding an analyte-sensitive dye compound to an addition-cure silicone and use in the manufacture of sensor apparatus |
| 01/29/1992 | EP0468585A2 Biologically active reagent, analytical element and methods for use of the reagent |
| 01/29/1992 | EP0468092A1 Process for measuring and controlling the concentration of alumina in the electrolytic cells for aluminum production |
| 01/28/1992 | US5084395 Reducible indicator compositions containing pyrogallol derivatives |
| 01/28/1992 | US5084382 A color former with an oxidizable coupler for detection of hydrogen peroxide or hydrogen peroxide forming system or peroxidase or oxidizers for amine detection |
| 01/28/1992 | CA1294832C Indicator sheet for an autoclave test pack |
| 01/26/1992 | CA2046130A1 Biologically active reagent, analytical element and methods for use of the reagent |
| 01/26/1992 | CA2031332A1 Process for measuring and controlling the concentration of alumina in the electrolytic cells for aluminum production |
| 01/25/1992 | CA2046981A1 Method for bonding an analyte-sensitive dye compound to an addition-cure silicone |
| 01/23/1992 | WO1992001226A1 Analytical test device for specific binding assays |
| 01/22/1992 | EP0467307A2 Gas analyzer |
| 01/21/1992 | US5082516 Process for producing chemical analytical slide |
| 01/15/1992 | EP0466303A2 Method and system for continuously monitoring and controlling a process stream for dechlorination residual |
| 01/15/1992 | EP0465718A2 Pyrolytic sampling cell |
| 01/14/1992 | US5081043 Spectrometric analysis of fluorination products |
| 01/14/1992 | US5081042 Ionic component sensor and method for making and using same |
| 01/14/1992 | US5081041 Ionic component sensor and method for making and using same |
| 01/14/1992 | US5080867 Portable carbonyl sulfide analyzer |
| 01/14/1992 | US5080866 Analytic appparatus and method |
| 01/14/1992 | CA1294285C Optical indicator chalcogen compounds and methods for their preparation and use |
| 01/10/1992 | CA2040114A1 Method and system for continuously monitoring and controlling a process stream for dechlorination residual |
| 01/10/1992 | CA2020753A1 Selective detection of vapors |
| 01/09/1992 | DE4021556A1 Concn. measuring arrangement for gaseous and/or vapour components - uses substance causing colour reaction in test tube, opto-electronic and/or visual detection |
| 01/07/1992 | US5079141 Apparatus and method for performing chemical analyses and immunoassays |
| 01/07/1992 | US5078164 Microtiter plate washer |
| 01/02/1992 | EP0463524A1 Composition and method of assaying for ketone bodies |
| 01/01/1992 | CN2091647U Medical probe for women |
| 12/31/1991 | US5077221 Equilibrating cation exchange chromatography plate with color-forming cation, depositing sample, developing, exposing; intensity |
| 12/31/1991 | US5077011 P-nitrophenol group attached to molecular structure through an ether or ester linkage, and a cationic polymer |
| 12/30/1991 | WO1992000516A1 Biomimetic sensor that simulates human response to airborne toxins |
| 12/30/1991 | CA2042645A1 Composition and method of assaying for ketone bodies |
| 12/27/1991 | EP0462203A1 Analyte assay device and apparatus |
| 12/27/1991 | EP0462134A1 Indicator, process for obtaining it and its use |
| 12/24/1991 | US5075127 Water insoluble, permeable, crosslinked cellulose and opaque agent |
| 12/24/1991 | US5075081 Mixture of glycol and palladium compound |
| 12/24/1991 | CA1293428C Process for the preparation of reagent layers containing hydrophobic reagents |
| 12/18/1991 | EP0461392A2 Test carrier for the determination of ions |
| 12/17/1991 | US5073484 Quantitative analysis apparatus and method |
| 12/12/1991 | WO1991019192A1 Composition and method for detecting vapor and liquid reactants |
| 12/12/1991 | WO1991019187A1 Analytical assay |
| 12/11/1991 | EP0456751A4 Test swab and methods of making and using same |
| 12/10/1991 | US5071769 Method and device for ketone measurement |
| 12/10/1991 | US5071768 Sample tube; removal of entrained oil and water contamination; color indicators for impurities; refrigeration and air conditioning systems |
| 12/10/1991 | US5071746 Test carrier for analysis of a sample liquid, method of using a test carrier and process for making a test carrier layer |
| 12/10/1991 | US5071526 Acidic gas sensors and method of using same |
| 12/04/1991 | EP0459677A2 Selective, high speed detection of vapors with analysis of multiple GC-separated portions |
| 12/04/1991 | EP0459226A1 Test method and device to assay for total protein |
| 12/04/1991 | EP0459196A1 Fluoromethylated polycyanobenzenes, their addition compounds with alkalicyanides, process for their preparation and utilisation of the fluoromethylated polycyanobenzenes |
| 12/04/1991 | CN1056756A Methodology for ph titration curve estimation for adaptive control |
| 12/03/1991 | US5070198 As-triazine compounds |
| 12/03/1991 | US5069879 Computerized |
| 11/30/1991 | CA2043328A1 Selective, high speed detection of vapors with analysis of multiple gc-separated portions |
| 11/30/1991 | CA2039858A1 Test method and device to assay for total protein |
| 11/28/1991 | WO1991018109A1 Temperature change indicator employing enzymes |
| 11/27/1991 | EP0458714A1 Method and apparatus for determining the local carbon content of a steel product |
| 11/27/1991 | EP0457989A1 Titration curve estimation for adaptive pH control |
| 11/26/1991 | US5068090 For conversion of carbonic acid in solution to carbonate salt, then measurement of electroconductivity |
| 11/21/1991 | EP0457184A2 Naphthol derivatives, method for their preparation and use therefor |
| 11/21/1991 | EP0457182A2 Method having increased sensitivity, for the determination of an ion, the use of suitable substances and corresponding means therefor |
| 11/21/1991 | EP0457123A2 Test support for the analytical determination of a component in a sample fluid |
| 11/21/1991 | EP0456751A1 Test swab and methods of making and using same. |
| 11/19/1991 | US5066843 Heat resistant and light weight container for materials to be ashed, and process for manufacture thereof |
| 11/13/1991 | EP0456303A2 Assay devices |
| 11/13/1991 | EP0456098A2 Asymmetric sandwich membrane system as diagnostic test device |
| 11/13/1991 | EP0431025A4 Smog monitor |
| 11/13/1991 | EP0406334A4 Hydrogel dye film sensing elements and their preparation |
| 11/13/1991 | EP0180626B1 $i(IN VITRO) TEST FOR OCULAR TOXIC PROPERTIES |
| 11/13/1991 | CN2088692U Electric capacity type buret |
| 11/13/1991 | CN1056169A On-line detector for cod |
| 11/12/1991 | US5064617 Combustion system |
| 11/12/1991 | US5064615 Method and reagent for determining the ionic strength of specific gravity of aqueous liquids |
| 11/12/1991 | US5064576 Steam sensitive composition and a sterilization indicator composition containing the same |
| 11/05/1991 | US5063164 Air pollution detection, protective device |
| 10/31/1991 | WO1991016618A1 On-line titration using colorimetric end point detection |
| 10/31/1991 | WO1991016613A1 Reaction control and solids characterization device |
| 10/29/1991 | US5061636 Chemical agent detectors and their method of use for detecting chemical nerve agents |
| 10/29/1991 | US5061633 Fluoroassay |