| 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) |
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| 01/01/1991 | US4982089 Method for obtaining the spectra of an unstable product |
| 01/01/1991 | US4981961 Chemically-stable chromatography adsorber; modifying nucleophilic polymers with pyridine bases |
| 01/01/1991 | US4981804 Ion chromatography |
| 01/01/1991 | US4981785 Apparatus and method for performing immunoassays |
| 01/01/1991 | US4981597 Gradient system |
| 12/31/1990 | WO1991000297A1 Improved cellulose chromatography support |
| 12/27/1990 | WO1991000508A1 Method and apparatus for obtaining analytes from liquid menstrua for analysis |
| 12/27/1990 | WO1990015994A1 Derivatisation reagents for use in the hplc-ecd analysis of peptides and proteins |
| 12/27/1990 | WO1990015989A1 Method for analytical separation of inositol phosphates |
| 12/27/1990 | EP0403700A1 Polyethyleneimine matrixes for affinity chromatography |
| 12/27/1990 | EP0403680A1 Apparatus and method for optimizing the liquid chromatographic separation of a sample |
| 12/27/1990 | CA2035473A1 Method and apparatus for obtaining analytes from liquid menstrua for analysis |
| 12/26/1990 | CN1010984B Method and apparatus for saccharide analysis |
| 12/25/1990 | US4980296 Process and apparatus for chemical analyses by chromatography |
| 12/25/1990 | US4980294 Quantitative determining amount of trimethylamine enzymatically produced from fish |
| 12/25/1990 | US4980131 Analysis |
| 12/25/1990 | US4980059 Liquid chromatograph |
| 12/25/1990 | US4980057 Apparatus for mass spectrometric analysis of liquid chromatographic fractions |
| 12/20/1990 | DE3919317A1 Derivatisierungsreagenzien fuer peptide und proteine bei der hplc-ecd-analyse Derivatization reagents for peptides and proteins in HPLC-ECD analysis |
| 12/19/1990 | EP0402509A1 Quartz glass capillaries for gas chromatography separation columns |
| 12/19/1990 | CN2067834U Chromatograph accessory for above-critical fluid |
| 12/18/1990 | US4977785 Method and apparatus for introduction of fluid streams into mass spectrometers and other gas phase detectors |
| 12/12/1990 | EP0401861A2 Explosive detection screening system |
| 12/12/1990 | EP0401248A1 Affinity matrices of modified polysaccharide supports |
| 12/11/1990 | US4977095 Liquid-absorption preconcentrator sampling instrument |
| 12/11/1990 | US4976994 Method for modifying diffusion selectivity of porous fritted carbonaceous electrode |
| 12/11/1990 | US4976924 For collection of air samples and measurement of contaminants |
| 12/11/1990 | US4976750 Detecting the data relating to carrier feeding conditions such as pressure and/or flow in injection point of a sample and by measuring variation occurs in the condition after injection |
| 12/11/1990 | CA1277658C Anionically modified polysaccharides, process for their preparation and the use thereof |
| 12/09/1990 | WO1990014886A1 Chemical products |
| 12/07/1990 | WO1990015658A1 Miniaturized mass spectrometer system |
| 12/06/1990 | CA2017967A1 Measurement of unsaturation level in butyl and epdm rubbers |
| 12/05/1990 | EP0400989A2 Method for spectroscopic analysis of hydrocarbons, method for chromatographic analysis of hydrocarbons and hydrocarbon refining operation using these methods |
| 12/05/1990 | EP0400639A2 System for enriching a probe substance for spectroscopic applications in flow-injection analysis |
| 12/05/1990 | EP0358693A4 Sintered pellet with biochemically active layer |
| 12/04/1990 | US4975648 Discharge ionization detector |
| 12/04/1990 | US4975647 Controlling machine operation with respect to consumable accessory units |
| 12/04/1990 | US4975583 Method and apparatus for detecting radioisotopes in fluids |
| 12/04/1990 | US4975378 Method for isotope dilution chromatography |
| 12/04/1990 | US4974628 Check valve cartridges with controlled pressure sealing |
| 12/04/1990 | US4974460 Precision locating and supporting device |
| 12/04/1990 | US4974458 Automatic preparation apparatus and support arm |
| 11/29/1990 | WO1990014686A1 A vaporization device for continuous introduction of liquids into a mass spectrometer |
| 11/29/1990 | DE3916805A1 Ion exchange is monitored and/or controlled |
| 11/28/1990 | EP0399318A1 Modified chromatographic carrier materials |
| 11/28/1990 | CN1047388A Method and apparatus for measuring nonporous surface area of carbon black |
| 11/27/1990 | US4973683 Method of cross-linking a porous polysaccharide gel |
| 11/27/1990 | US4972729 For conducting split sampling gas chromatography of a liquid sample |
| 11/27/1990 | US4972701 Osmotic method for determining the molecular weight of solutes in solution with a solvent |
| 11/26/1990 | WO1990014587A1 Apparatus and method for sampling |
| 11/26/1990 | CA2057888A1 Apparatus and method for sampling |
| 11/22/1990 | EP0398852A2 A method for interfacing a system of supercritical fluid extraction (SFE) to a system of capillary gas chromatography (CGC), and related interface |
| 11/22/1990 | EP0397847A1 Diagnostic assay for breast cancer in human female patients |
| 11/22/1990 | DE4005085A1 Method for measuring non-porous carbon black surface area |
| 11/20/1990 | US4971915 Super critical chromatography for determination of boiling points, calibration |
| 11/20/1990 | US4971833 Method of coating solid particles with a hydrophilic gel |
| 11/20/1990 | US4971697 Composite chromatographic article of silica on a support |
| 11/20/1990 | US4970905 Apparatus and method for sampling |
| 11/19/1990 | CA2009703A1 Method for measuring non-porus surface area of carbon black |
| 11/14/1990 | EP0397469A2 Background correction method for use in gas chromatography |
| 11/14/1990 | EP0397468A2 Spectroscopic plasma torch for microwave induced plasmas |
| 11/14/1990 | EP0397467A1 Photodetector |
| 11/14/1990 | EP0397119A2 Surface-modified polyacrylonitrile substrates |
| 11/14/1990 | EP0396884A2 Gas chromatograph having integrated pressure programmer |
| 11/14/1990 | EP0294410B1 Process for enriching and/or isolating cardiac glycosides using non-polar adsorber resins |
| 11/13/1990 | US4970170 Liquid chromatographic determination of water |
| 11/13/1990 | US4970169 Method for measuring non-porous surface area of carbon black |
| 11/13/1990 | US4970085 Flavors |
| 11/13/1990 | US4970002 Supplying, desorption, circulation |
| 11/13/1990 | US4969993 Chromatographic instrument with command sequencing |
| 11/13/1990 | US4969938 Fluid connector for microdevices |
| 11/09/1990 | CA2016274A1 Photodiode configurations for simultaneous background correction and specific wavelength detection |
| 11/09/1990 | CA2016273A1 Spectroscopic plasma torch for microwave induced plasmas |
| 11/09/1990 | CA2016272A1 Background correction method for use in gas chromatography |
| 11/08/1990 | CA2016061A1 Surface modified polyacrylonitrile substrates |
| 11/07/1990 | EP0396163A2 Capillary flow cell |
| 11/06/1990 | US4968885 Method and apparatus for introduction of liquid effluent into mass spectrometer and other gas-phase or particle detectors |
| 11/06/1990 | US4968428 Centrifugal counter-current distribution chromatography |
| 11/06/1990 | US4968421 Column for liquid chromatography |
| 11/06/1990 | US4967591 Apparatus, application and method of making a gas flow regulator operating at a very low flow rate and at sonic velocity for measuring gaseous adsorbtion and desorbtion |
| 11/06/1990 | US4967590 Supercritical fluid chromatography injector and the method for using the same |
| 11/05/1990 | WO1990013534A1 Detection of endotoxin in pharmaceutical preparations by mass spectrometry |
| 11/05/1990 | CA2032133A1 Detection of endotoxin in pharmaceutical preparations by mass spectrometry |
| 10/31/1990 | EP0395481A2 Method and apparatus for estimation of parameters describing chromatographic peaks |
| 10/31/1990 | EP0394430A1 Method for determining the concentration of an ionic or ionizable solute by ion-exchange chromatography. |
| 10/31/1990 | EP0242302B1 Material for affinity chromatography and its use in the separation and purification of protein antigens from bacteria of the genus bordetella |
| 10/31/1990 | DE3913738A1 Detaining part of sample for cold chromatograph column - while unwanted materials are removed before remainder is fed into heated column |
| 10/30/1990 | US4966848 Isolation, purification, characterization, cloning and sequencing of N α-acetyltransferase |
| 10/30/1990 | US4966785 Coating inside surface with a crosslinked polymer stationary phase by exposure to low temperature plasma |
| 10/30/1990 | US4966696 For liquid chromatographic columns; sintering small particles containing two materials at temperature lower than their eutec tic point |
| 10/30/1990 | US4966695 High pressure liquid chromatography column jacket |
| 10/30/1990 | US4966694 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide |
| 10/24/1990 | EP0393776A2 Liquid chromatography |
| 10/24/1990 | EP0393196A1 Molecular weight distribution measurement method, spectrophotodetector and molecular weight distribution measurement apparatus of polymers |
| 10/24/1990 | EP0393185A1 Syringe type column for chromatography |
| 10/24/1990 | CN2064508U Solution guiding system with minor memorizing effect |
| 10/23/1990 | US4965289 Substrate and process for making a substrate |
| 10/23/1990 | US4965048 Thin-layer chromatography flame ionization detector for quantitative analysis of chromatographically-separated substances |
| 10/23/1990 | US4964985 Liquid chromatograph |
| 10/23/1990 | CA1275398C Porous silica microspheres having silanol-enriched and silanized surfaces |