Patents
Sitemap › G01 - Measuring; Testing › G01N - Investigating or analysing materials by determining their chemical or physical properties › G01N 30 - Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography
Patents for G01N 30 - Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography (41,194)
11/1989
11/07/1989US4879472 Multiplexed electronically programmable multimode ionization detector for chromatography
11/07/1989US4879247 Separation
11/07/1989US4879039 Process for measuring stable-type glycated hemoglobin in a sample
11/07/1989US4879038 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide
11/07/1989US4879029 Liquid chromatograph apparatus
11/07/1989US4879011 Process for controlling a reaction by ultrasonic standing wave
11/07/1989US4878382 Method of monitoring the drilling operations by analyzing the circulating drilling mud
11/02/1989WO1989010177A1 Improved micro-hplc
11/01/1989CN2047020U Pyrolysis capillary column chromatic spectrum and joint instrument thereof
10/1989
10/31/1989US4877830 Chromatography of proteins
10/31/1989US4877744 Analyzing sample fluid for oxidative drug metabolism deficiencies
10/31/1989US4877743 Monitoring reaction of nitrous oxide to form nitrogen
10/31/1989US4877584 Particles of substrate attached to heating filament
10/31/1989US4877523 Centrifugal counter-current distribution chromatography
10/31/1989US4877522 Liquid supply apparatus
10/31/1989US4876882 Viscosity detection method for liquid chromatography systems with carrier liquids having time-varying viscosity
10/26/1989DE3812017A1 Process for the derivatisation of amino acids using phenyl isothiocyanates for HPLC (precolumn derivatisation)
10/25/1989EP0338692A2 Fraction collector
10/25/1989EP0338572A1 Liquid chromatograph-direct coupled mass spectrometer
10/25/1989CN1036516A Isolated material
10/24/1989US4876005 High pressure column assembly for a liquid chromatograph system
10/18/1989EP0337666A2 Fluid sample accumulator
10/18/1989EP0337144A1 Separation materials
10/18/1989EP0337123A1 A process for the preparation of microspherical sintered bodies of hydroxyapatite and a chromatographic packing material comprising the microspherical sintered bodies of hydroxyapatite
10/17/1989US4875169 Method for improving the limit of detection in a data signal
10/17/1989US4874944 Mass spectrometer
10/17/1989US4874520 Chromatographic process
10/17/1989US4874511 Apatite chromatography column system
10/17/1989US4873862 Heating stabilized glass and noble gas to evolve electrons
10/17/1989CA1262367A1 Adsorbent
10/11/1989EP0299063A4 Hydrophilic article and method of producing same.
10/11/1989CN2045855U Coal mine special-purpose gas chromatograph
10/10/1989US4873058 Flow divider for gas chromatographs
10/10/1989US4872992 Method and apparatus for analyzing diluted and undiluted fluid samples
10/10/1989US4872979 Chromatography column
10/10/1989US4872334 Variable flow capillary gas chromatography method
10/05/1989WO1989009486A1 Isotope-ratio-monitoring gas chromatography-mass spectrometry apparatus and method
10/05/1989WO1989009235A1 Substituted cyclodextrins and process for chromatographic separation of chiral organic compounds
10/05/1989WO1989009194A1 Composite capillary tube structure
10/05/1989WO1989009088A1 Paralog affinity chromatography
10/04/1989EP0335538A2 Process for fractionating a mixture of rare earth metals by ion exchange
10/04/1989EP0335354A2 Rapid and sensitive low pressure enzyme detection and measurement system
10/04/1989EP0335268A2 Detector cell for liquid chromatography
10/04/1989EP0334994A1 Reciprocating type fluid delivery pump
10/04/1989CN2045494U Multifunction soil analysis apparatus
10/04/1989CN1036078A Chromatographic binding assay devices and methods
10/03/1989US4871693 Porous cordierite ceramics
10/03/1989US4871463 Vertical reaction vessel
10/03/1989US4871453 Chromatographic separation method and associated apparatus
10/03/1989CA1262121A1 High performance liquid chromatography mobile phase
09/1989
09/28/1989DE3908302A1 Ion chromatographic method and eluant for carrying out the method
09/27/1989EP0334004A1 Isolation, purification, characterization, cloning and sequencing of N-alpha-acetyltransferase
09/27/1989EP0333939A2 Capillary flow cell for optically analysing fluids, and apparatus comprising said cell
09/26/1989US4869876 Multi-purpose plural-oven gas chromatography system with shared controls
09/26/1989US4869374 Chromatographic pumping system
09/26/1989US4869282 Micromachined valve with polyimide film diaphragm
09/26/1989US4869093 Methods and apparatus for determining sorption isotherms
09/26/1989CA1261594A1 Packed fiber glass reaction vessel and method of preparation
09/26/1989CA1261172A1 Atmospheric pressure helium afterglow discharge detector for gas chromatography
09/26/1989CA1260465A1 Process for preparing azidobenzazepines
09/20/1989EP0172217B1 Isotransferrins in body fluid sample as a measure of alcohol consumption
09/19/1989US4867947 Endless belts
09/19/1989CA1259709A1 Apparatus and method for applying a dissolved sample from a liquid chromatograph to a chemical ionization mass spectrometer
09/13/1989EP0332323A1 Carrier for affinity chromatography immobilized with antibodies and preparation thereof
09/12/1989US4866278 Gas chromatography
09/12/1989US4866270 Method and apparatus for the determination of isotopic composition
09/12/1989US4865996 Sorption/desorption method and apparatus
09/12/1989US4865995 Method for measuring a concentration of saccharides having a low molecular weight and sensor for measuring the same
09/12/1989US4865746 Chromatographic analysis of hydrocarbons
09/12/1989US4865741 Multistage process using a cyano bonded phase column and silica column
09/12/1989US4865729 Radial thin layer chromatography
09/12/1989US4865728 Adaptor for allowing different gel bed heights in a chromatographic separation column
09/12/1989US4864843 Method and apparatus for chromatographic analysis, in particular of petroleum liquids
09/11/1989EP0309489A4 Fused-silica microbore packed chromatography column with chemically modified column wall.
09/08/1989WO1989008130A1 Immobilized artificial membranes
09/06/1989EP0331283A1 High stability porous zirconium oxide spherules
09/06/1989CN1035358A Method of analyzing chromatograph of organic compounds and opparatus for performing this method
09/05/1989US4863972 Porous cross-linked polyvinyl alcohol particles, process for producing the same, and separating agent composed of the same
09/05/1989US4863873 Method for biological testing and/or developing pharmaceuticals for treatment of disorders
09/05/1989US4863871 Method and device for adjusting the cooling temperature of a sample trap in an apparatus for gas chromatographic analysis
09/05/1989US4863610 Scraping, collecting & eluting apparatus for thin layer chromatography and method for its use
09/05/1989US4863592 Fittings for holding frit at outlet
09/05/1989US4863491 Interface for liquid chromatography-mass spectrometry systems
09/05/1989US4862932 Fraction collector
08/1989
08/31/1989DE3805995A1 Method and device for spectrometric measurement
08/30/1989EP0330650A2 Device for gas analysis
08/30/1989EP0330633A1 Adaptor for allowing different gel bed heights in a chromatographic separation column
08/30/1989EP0330503A2 Method for forming a gel bed in a column for liquid chromatography and an axially adjustable-type column device used for this method
08/30/1989EP0330095A1 Automated preparative gas chromatograph
08/30/1989CN1035119A Carbon adsorption made from pyrolysed polymer of pore sulfonation
08/29/1989US4861989 Ion vapor source for mass spectrometry of liquids
08/29/1989US4861988 Ion spray apparatus and method
08/29/1989US4861555 Apparatus for chromatographic analysis of ionic species
08/29/1989US4861488 Automatic chromatography process
08/29/1989US4861473 Apparatus for facilitating compression of packing material in a liquid chromatography column
08/29/1989US4861358 Branch coupling for use between capillary columns of gas chromatographs
08/29/1989US4860793 Mixing valve
08/24/1989WO1989007759A1 Tubing assembly
08/24/1989WO1989007618A1 Affinity matrices of modified polysaccharide supports
08/23/1989EP0329290A2 Improved supercritical fluid chromatography
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