| 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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| 10/23/1991 | CN2087340U High-efficiency general joint for liquid-phase chromatographic column |
| 10/22/1991 | US5059654 Affinity matrices of modified polysaccharide supports |
| 10/22/1991 | US5059328 Separation agent comprising 1,3-glucan |
| 10/22/1991 | US5059290 Qualitative analysis of biological specimans |
| 10/22/1991 | US5058856 Thermally-actuated microminiature valve |
| 10/22/1991 | CA1290958C Channel device and tube connection and their fabrication procedures |
| 10/19/1991 | CA2040583A1 Method of drug detection |
| 10/17/1991 | WO1991015769A1 Bi-directional lateral chromatographic test methods |
| 10/17/1991 | WO1991015745A1 Method and device for solid phase microextraction and desorption |
| 10/17/1991 | WO1991015280A1 Method for liquid chromatographic extraction of strontium from acid solutions |
| 10/17/1991 | DE4011301A1 Monitoring circuit for flame ionisation detector - esp. of gas chromatograph with thermal desorber |
| 10/16/1991 | EP0451566A2 Process and device for gas-chromatographic separation |
| 10/16/1991 | EP0222921B1 Apparatus for preventing pulsating current for liquid chromatography and method therefor |
| 10/15/1991 | US5057437 Method for broad spectrum drug detection |
| 10/15/1991 | US5057436 Durability, selectivity toward ammonia |
| 10/15/1991 | US5057426 Method for separating long-chain nucleic acids |
| 10/15/1991 | US5057224 Method for evaluating the performance of reverse phase high performance liquid chromatographic columns |
| 10/15/1991 | US5057216 Capillary flow cell |
| 10/15/1991 | US5057126 Gas chromatography |
| 10/12/1991 | WO1991015758A1 Methods and apparatus allowing sequential chemical reactions |
| 10/12/1991 | CA2079005A1 Methods and apparatus allowing sequential chemical reactions |
| 10/10/1991 | DE4011350A1 Gas chromatographic separation using controlled carrier gas - passed through dispenser for two=stage process enabling rapid enrichment of investigation substances |
| 10/09/1991 | EP0450504A1 Preparative chromatographic separation for the production of enantiomerically pure hetrazepines |
| 10/09/1991 | EP0450182A2 Reusable cap with integral high pressure seal and method for use |
| 10/09/1991 | CN1014275B Circular paper tayer analytical method for testing rapeseed (oil) methyl (or ethyl) esters of fatty acids |
| 10/08/1991 | US5055678 Chromium coating |
| 10/08/1991 | US5055194 Support for high performance liquid chromatography in a magnetically stabilized fluidized bed |
| 10/08/1991 | US5054919 Seal for high pressure and small volume sample cells |
| 10/08/1991 | CA1290481C Graft copolymers of crosslinked polymers and polyoxyethylene, processes for their production, and their usage |
| 10/07/1991 | WO1991015760A1 Packing of column for fractionating and assaying high specific gravity lipoprotein and/or hdl cholesterol |
| 10/03/1991 | WO1991014941A1 System for regulating the pressure in an open fluid circuit with a given flow rate |
| 10/03/1991 | WO1991014490A1 Slurry compressor, apparatus for guiding compressor, and method for packing slurry in column |
| 10/03/1991 | WO1991013350A3 Analyzer transport device |
| 10/02/1991 | EP0449518A1 Method and apparatus for detecting low volatility atmospheric vapors |
| 10/02/1991 | EP0448823A2 Separation materials |
| 10/02/1991 | CN2085965U Capillary column with big bore and thick liquid film |
| 10/02/1991 | CN1055063A Aminoguanidine assay and applications thereof |
| 10/01/1991 | US5053135 Separating by interpenetrated form of silica and three-dimensional crosslinked acrylic, vinyl and/or allyl copolymer |
| 10/01/1991 | US5052805 Ventilation unit for a flame photometric detection device |
| 10/01/1991 | CA1289989C Zero dead volume connector |
| 10/01/1991 | CA1289894C Apparatus for, and methods of, operating upon a fluid |
| 09/26/1991 | DE4105107A1 Continuous flow esp. flow injection analysis system - has capillary system for distribution of specimen in carrier medium with electrodes for applying electric field |
| 09/26/1991 | DE4009559A1 Mol. wt. determn. from gel permeation chromatograms - calibrated by specimens with known values using nonlinear regression |
| 09/25/1991 | EP0448302A2 Carbon-clad inorganic oxide particles and the same with a polymer coating thereon |
| 09/25/1991 | EP0448228A2 Aminoguanidine assay and applications thereof |
| 09/25/1991 | EP0447451A1 Micromachined valve with polyimide film diaphragm. |
| 09/24/1991 | US5051557 Microwave induced plasma torch with tantalum injector probe |
| 09/24/1991 | US5051176 Packing material for liquid chromatography |
| 09/18/1991 | EP0447288A1 Amperometric detection cell |
| 09/18/1991 | EP0447174A2 High speed vapor detection with low temperature bypass |
| 09/18/1991 | EP0446970A2 A solid-phase extraction cartridge |
| 09/18/1991 | EP0446285A1 Method for determination of glycated proteinaceous species |
| 09/18/1991 | EP0446213A1 Vertical reaction vessel |
| 09/17/1991 | US5049509 Chromatographic analyzer |
| 09/17/1991 | US5049508 Apparatus and process for total sulfur determination |
| 09/17/1991 | US5048322 Heated column inlet gas chromatography method and apparatus |
| 09/12/1991 | DE4006923A1 Sepn. material for chromatography - consists of cyclodextrin chemically bonded onto carrier via carbamic acid gps. |
| 09/11/1991 | EP0446080A1 Method and device for elemental analysis of a sample by mass spectrometry coupled to a high frequency induced plasma |
| 09/11/1991 | EP0445967A2 Improved gas chromatography methods and apparatus |
| 09/11/1991 | EP0445927A2 Odorant analyzer system |
| 09/11/1991 | EP0445604A2 Separation materials for chromatography |
| 09/11/1991 | EP0419568A4 Keyed column chromatography apparatus |
| 09/10/1991 | US5047438 Crosslinked Addition Copolymer Particles Useful In Chromatography, Adsorption, Ion Exchanging And In Catalysis |
| 09/10/1991 | US5047073 Gas Chromatography |
| 09/10/1991 | CA1288611C Chromatographic optical detector |
| 09/05/1991 | WO1991013349A1 Probe inlet apparatus and method |
| 09/05/1991 | WO1991013346A1 On-capillary gap junction for fluorescence detection in capillary electrophoresis |
| 09/05/1991 | WO1991012867A1 Separation of rare earth elements with high-speed countercurrent chromatography |
| 09/05/1991 | DE4006351A1 Maintaining internal pressure in liq. chromatography column - and countering shrinkage by externally adjustable piston |
| 09/04/1991 | EP0444946A2 A method for quantitatively measuring saturates, olefins and aromatics in a composition |
| 09/04/1991 | EP0444896A2 Single port thermospray ion source with coaxial vapor flow |
| 09/04/1991 | EP0444498A2 Vial locator and sensor |
| 09/04/1991 | EP0444441A2 Minimizing eluate band widths in liquid chromatography |
| 09/04/1991 | EP0444299A1 Decoupled flow and pressure setpoints in an extraction instrument using compressible fluids |
| 09/04/1991 | EP0444129A1 Human neutrophilic granulocyte end-stage maturation factor and its preparation and use |
| 09/04/1991 | EP0444070A1 Method of separating a substance from a liquid by means of a particulate material |
| 09/04/1991 | CN1054256A Controlled pore composite polytetrafluoroe-thylene article and method therefor |
| 09/03/1991 | WO1991013350A2 Analyzer transport device |
| 09/03/1991 | WO1991013087A1 Hybrid compound purification |
| 09/03/1991 | US5045703 Cold trapping apparatus for infrared transmission analysis including a method and substrate therefor |
| 09/03/1991 | US5045234 Solution for controlling the performance of the ionic exchange chromatography column of HPLC (High Performance Liquid Chromatography) apparatuses, and a process for preparing the same |
| 09/03/1991 | US5045209 From zircon and rutile wastes, digestion with acid, ion exchanging, calcination to oxide |
| 09/03/1991 | US5045208 Column analyzer system |
| 09/03/1991 | US5045204 Method and apparatus for generating a high purity chromatography eluent |
| 09/03/1991 | US5045203 Separation of protein antigens of Bordetella bacteria by affinity chromatography |
| 09/03/1991 | US5045201 Glass microbeads for biochemical separation of material from a fluid medium |
| 09/03/1991 | US5045196 Apparatus for pre-concentration of a sample for spectroscopical reasons |
| 09/03/1991 | CA2077338A1 Hybrid compound purification |
| 09/03/1991 | CA2076370A1 Analyzer transport device |
| 09/03/1991 | CA2037398A1 Method for quantitatively measuring saturates, olefins and aromatics in a composition |
| 09/03/1991 | CA2034734A1 Amperometric detection cell |
| 08/28/1991 | EP0443853A2 Controlled pore cmposite polytetrafluoroethylene article and method therefor |
| 08/28/1991 | EP0442977A1 Perfusive chromatography |
| 08/28/1991 | CN2083752U Glass capillary colour spectrum column clamping protector |
| 08/28/1991 | CN1013663B Process for calcium-phosphate type hydroxyapatite of chromatographic separation |
| 08/27/1991 | US5043928 Resampling system using data interpolation to eliminate time effects |
| 08/27/1991 | US5043423 Method for purifying low molecular weight compounds of peptide or pseudo-peptide structure |
| 08/27/1991 | US5042293 Ion chromatography method for low concentrations |
| 08/27/1991 | CA1288046C Process for the separation of antifactor viii:c antibodies, more particularly usable for the purification of the blood plasma of a type a hemophiliac |
| 08/24/1991 | CA2035295A1 Controlled pore composite polytetrafluoroethylene article and method therefor |