| 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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| 05/22/1991 | EP0427955A1 Method for determining sulfur loading in organic polysulfides |
| 05/22/1991 | EP0427807A1 Buffer and reagent system for separating amino acids |
| 05/22/1991 | EP0203095B1 Process of preparing polyamide supports capable of reaction with antibodies and enzymes and supports produced thereby. |
| 05/21/1991 | US5017290 Separation agent comprising acyl- or carbamoyl-substituted polysaccharide |
| 05/21/1991 | CA1284366C Chromotographic pumping system |
| 05/16/1991 | DE4037686A1 Quantitative determn. of cocaine and its main metabolites - by thin layer chromatography followed by conversion to a fluorescing prod. by heating |
| 05/15/1991 | EP0427671A1 Valve |
| 05/14/1991 | US5015845 Electrospray method for mass spectrometry |
| 05/14/1991 | US5015843 Fiber optic chemical sensors based on polymer swelling |
| 05/14/1991 | US5015373 High stability porous zirconium oxide spherules |
| 05/14/1991 | US5014541 Continuous air monitoring apparatus and method |
| 05/14/1991 | CA1284022C Graded refractory cermet article |
| 05/08/1991 | EP0426396A1 Method for determining branch distribution of polymer |
| 05/08/1991 | EP0425848A1 Column packing material for gel permeation chromatography, process of preparation and use thereof |
| 05/08/1991 | EP0309450B1 Micro-valve arrangement |
| 05/08/1991 | DE3935738A1 Arzneimittel, enthaltend das humane parathormon-fragment (1-37) als aktiven wirkstoff A drug containing the human parathyroid hormone-fragment (1-37) as the active drug |
| 05/07/1991 | US5014009 Detector for gas chromatograph for detecting ammonia and amine compounds |
| 05/07/1991 | US5013443 Extraction and separation method and apparatus using supercritical fluid |
| 05/07/1991 | US5013433 Zero void column end plate for chromatography |
| 05/03/1991 | CA2028182A1 Method for determining sulfur loading in organic polysulfides |
| 05/02/1991 | WO1991005606A1 Carrier and its use in nucleic acid chromatographic separation |
| 05/02/1991 | EP0425297A2 Column analyzer system |
| 05/02/1991 | EP0425104A1 Column packing material |
| 05/02/1991 | DE4032963A1 Liq. chromatography column analysis of specimen components marked - in heated reaction to aid separate extraction |
| 05/01/1991 | WO1991006356A1 Method to identify analyte-binding ligands |
| 05/01/1991 | CA2072637A1 Method to identify analyte-binding ligands |
| 05/01/1991 | CA2028547A1 Method for determining branch distribution of polymer |
| 04/30/1991 | US5012101 Optical apparatus and method |
| 04/30/1991 | US5012052 Isotope-ratio-monitoring gas chromatography-mass spectrometry apparatus and method |
| 04/30/1991 | US5011608 Biogenic amine assay using HPLC-ECD |
| 04/30/1991 | US5011022 Cyclic flow slurry fractionation |
| 04/30/1991 | US5010921 Nonsymmetrical valve |
| 04/28/1991 | WO1991006564A1 hPTH (1-37) FRAGMENT, ITS PRODUCTION, DRUG CONTAINING IT AND ITS USE |
| 04/28/1991 | CA2028689A1 Column analyzer system |
| 04/25/1991 | DE4032817A1 Chromatographic analysis of catecholamine - in three stages of prepn. decontamination and fraction atom |
| 04/25/1991 | DE3935098A1 Traegermaterial und seine verwendung in einem verfahren zur chromatographischen trennung von nukleinsaeuren Traegermaterial and its use in a method for the chromatographic separation of nucleic acids |
| 04/24/1991 | EP0423938A1 Ligand-containing medium for chromatographic separation, process for preparing the medium, and use of the medium for isolating synthetic or natural molecules from a fluid mixture |
| 04/24/1991 | EP0423873A2 Process for making improved citrus aqueous essence |
| 04/24/1991 | EP0423517A1 Dosing device for analytical instruments |
| 04/24/1991 | EP0423454A2 Multimode ionization source |
| 04/24/1991 | EP0423312A1 Detection of endotoxin in pharmaceutical preparations by mass spectrometry |
| 04/24/1991 | EP0268648B1 Chromatographic separation device |
| 04/23/1991 | US5010184 Ionically modified agarose |
| 04/23/1991 | US5010022 Method for determining sulfur loading in organic polysulfides |
| 04/23/1991 | US5009778 Axially-driven valve controlled fluid trapping assembly |
| 04/23/1991 | US5009591 Pyrolyzer for gas chromatography |
| 04/23/1991 | US5009099 Background correction method for use in gas chromatography |
| 04/23/1991 | CA1283368C Chromatographic cassette |
| 04/20/1991 | CA2026720A1 Process for making improved citrus aqueous essence |
| 04/18/1991 | WO1991005084A1 Gel packed columns suitable for use in chromatography |
| 04/18/1991 | WO1991004922A1 Method for packaging perishable products |
| 04/18/1991 | WO1991004792A1 Vertical reaction vessel |
| 04/18/1991 | DE4032337A1 Gas mixt. prepn. appts. |
| 04/18/1991 | DE3934529A1 Waste gas monitoring arrangement for disinfectant mfr. - collects gases over long period enabling sulphur di:oxide measurement with pH meter |
| 04/17/1991 | EP0422988A1 Method and device for transferring a fluid sample between two chambers, and their application to gas chromatography |
| 04/17/1991 | EP0422448A2 Apparatus for measuring light absorbance or fluorescence in liquid samples |
| 04/17/1991 | CN1012389B Thermostatic water-bath method for coating chromatographic column with quartz capillary |
| 04/16/1991 | US5008627 Conductivity detector |
| 04/16/1991 | US5008358 Polymer compositions |
| 04/16/1991 | US5008204 Infrared spectroscopy or nuclear magnetic resonance analysis; fractional crystallization |
| 04/16/1991 | CA1283090C Bonded phase of silica for solid phase extraction |
| 04/16/1991 | CA1283073C Adsorbent for purification of blood coagulation factor viii and process for purification of blood coagulation factor viii using the same |
| 04/10/1991 | EP0421463A2 Fluid seal |
| 04/10/1991 | EP0421294A2 Improved self-performing immunochromatographic device |
| 04/10/1991 | EP0421235A2 Hydrophilic laminated porous membranes and methods of preparing same |
| 04/10/1991 | EP0421234A2 Hydrophilic laminated porous membranes and methods of preparing same |
| 04/10/1991 | CN1050612A Quantitative analysis method for oil and gas constituents of oil reservoir rock |
| 04/10/1991 | CN1050610A Rapid preparation method for standard air and its apparatus |
| 04/09/1991 | US5006474 Bi-directional lateral chromatographic test device |
| 04/09/1991 | US5006315 Preventing condensation of low-volatile effluents-alternately supplying solvent; backpressure means |
| 04/09/1991 | US5005434 Autosampler with a means for detecting air bubble in specimen |
| 04/09/1991 | US5005399 Resistively heated gas chromatograph system |
| 04/09/1991 | CA1282770C Immobilisation supports for chemical and physical processes and methods of their manufacture |
| 04/04/1991 | DE3931971A1 Preparing appts. with enrichment column for liq. analysis specimens - has fraction collector, pump, containers connected via liq. lines and air bubble detectors controlling by=pass or blocking device |
| 04/03/1991 | EP0420115A1 Packing material for liquid chromatography |
| 04/03/1991 | EP0420021A2 Hydrophilic laminated porous membranes and methods of preparing same |
| 04/03/1991 | EP0419568A1 Keyed column chromatography apparatus |
| 04/03/1991 | EP0419506A1 Fluid distributor and device for treating a fluid, such as a chromotograph equipped with said distributor. |
| 04/02/1991 | US5004546 Heating with hemolysis agent containing potassium phthalate to remove unstable types, analyzing by chromatography |
| 04/02/1991 | US5004538 Control arrangement for the chromatography of liquid |
| 03/30/1991 | CA2025487A1 Hplc avidin monomer affinity resin |
| 03/28/1991 | DE4029557A1 Liq. chromatography column appts. and systems - esp. for sepn. and analysis of haemoglobin forms |
| 03/28/1991 | DE4017909A1 Controlling chromatograph gas streams - by adjusting relative positioning of supply columns in connector leading to detector |
| 03/28/1991 | CA2025476A1 Hydrophilic laminated porous membranes and methods of preparing same |
| 03/28/1991 | CA2025475A1 Hydrophilic laminated porous membranes and methods of preparing same |
| 03/28/1991 | CA2025474A1 Hydrophilic laminated porous membranes and methods of preparing same |
| 03/27/1991 | EP0419357A1 Process and device for dosage of impurities in a gas with gas chromatography and use for calibrating doping impurities in silane |
| 03/27/1991 | EP0419167A1 Isotopic composition analyzer |
| 03/27/1991 | EP0418404A1 Method of determining optimum operating conditions in an electrochemical detector and electrochemical detector using the method |
| 03/26/1991 | US5003174 Optical high-pressure transmission cell |
| 03/26/1991 | US5002669 Separation agent comprising 1,3-glucan |
| 03/26/1991 | CA1282063C Separation and purification of cyclodextrins |
| 03/23/1991 | CA2025821A1 Gas impurities dosimeter functioning by gas chromatogrphy and use of the process thereof for the calibration of doping in silane |
| 03/21/1991 | WO1991003719A1 Process and device for preparing a gas mixture for analysis, and application of the process |
| 03/21/1991 | WO1991003298A1 Continuous high performance liquid chromatography |
| 03/21/1991 | WO1991003257A1 Methods for activating polymeric carriers and compositions prepared therefrom for use in affinity chromatography |
| 03/20/1991 | EP0417976A2 Liquid chromatography mass spectrometry method and apparatus |
| 03/20/1991 | EP0417755A1 Packing for chromatography and its use for separating water soluble organic compounds |
| 03/20/1991 | EP0417407A1 Shaped bodies of macroporous ion exchanger resins and their use |
| 03/20/1991 | EP0417347A1 Electrochemical detector |