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)
09/1981
09/15/1981US4289620 High pressure glass column for high performance liquid chromatography
09/15/1981US4289029 High temperature injection and vaporization system for gas chromatography
09/08/1981US4288322 Sample/standard injection head for fluid-phase chromatograph
09/08/1981US4287752 Adsorption by copper on silica gel
09/08/1981CA1108517A1 Analytical method for determining acid/salt and base/salt species concentration in solution
09/01/1981US4286873 Refractometer cell with integral lens
09/01/1981US4286457 Viscosity measurement
09/01/1981US4286456 Gas chromatographic chamber
08/1981
08/26/1981EP0034337A2 A process for the optical resolution of a racemic mixture
08/25/1981US4285698 Analysis of aflatoxins in peanuts by high pressure liquid chromatograph
08/18/1981US4284352 Heat exchanger for refractometer
08/18/1981US4283945 Volume measuring apparatus
08/11/1981US4283370 And eluting with a mineral acid
08/11/1981US4283280 Cartridge type separation column and holder assembly for liquid chromatographs
08/11/1981US4283201 Titration
08/11/1981US4283199 Chromatography
08/11/1981US4283140 Spatially homogenizing optical modulator
08/11/1981CA1106768A1 Apparatus for separating fluids
08/05/1981EP0033188A1 Electrochemical detection system
08/05/1981EP0033012A2 A device for the automatisation of at least one operation in an injector for gas chromatographic columns
08/04/1981US4281687 Fluid storage device
08/04/1981US4281679 Flow control means for use in an adaptor assembly
08/04/1981US4281618 Apparatus for transferring sample on flexible sheet to chromatographic plate
07/1981
07/29/1981EP0032770A2 Apparatus for chromatographic ion analysis and method of chromatographic ion analysis
07/29/1981EP0032560A1 Direct on-column injector and injection method
07/28/1981US4280925 Ion exchanging with zinc sulfide
07/28/1981US4280905 Chromatography column
07/28/1981US4280823 Method and apparatus for sonic separation and analysis of components of a fluid mixture
07/22/1981EP0032190A2 Apparatus for measuring radiation emitted by a sample
07/21/1981US4279509 Zero volume flow cell
07/07/1981US4277251 Absorption on silica gel
07/07/1981US4277017 Gear drive for seal-less counter current chromatography
07/07/1981US4276913 Method and apparatus for fluid sample injection for fluid chromatography
07/07/1981US4276907 Fluid actuated valve
06/1981
06/30/1981US4276475 Novel photometric system
06/30/1981US4276060 Chromatographic hydrogen isotope separation
06/30/1981CA1104043A1 Personal monitoring device or dosimeter, for measuring exposure of personnel to organic vapors
06/25/1981WO1981001746A1 Chromatographic sheet of layer for pressurized layer chromatographic apparatus
06/23/1981US4274967 Chromatographic apparatus and method
06/23/1981US4274480 Gas chromatograph sample conditioner
06/16/1981US4273867 Method and reagent for counteracting lipemic interference
06/16/1981US4273653 Microchromatographic system for medicament intake control
06/16/1981US4273559 Alkali flame ionization detector
06/16/1981CA1103135A1 Method to determine a diagnostic indicator of blood sugar condition and a liquid chromatographic microcolumn therefor
06/10/1981EP0029936A1 Method and device for the long-term control of gaseous pollutant emissions or influences, as well as of the moisture content of gases, especially in the air
06/09/1981US4272483 Solution handling apparatus and method
06/09/1981US4272381 Thin-layer chromatography spotting
06/09/1981US4272380 For thin layer chromatography, lipophilic dye containing disk
06/09/1981US4272246 Method and apparatus for chromatographic quantitative analysis
06/09/1981US4271703 High temperature sampling system for liquid chromatography
06/09/1981US4271697 Chromatographic analysis
06/09/1981US4271695 Apparatus for feeding carrier gas to on-column injectors
06/03/1981EP0029457A1 Ultrasensitive enzymatic radioimmunoassay method
06/02/1981US4271022 Detection unit with solute detector and transport system
06/02/1981US4271021 Treating polyacrylic acid with an acid
06/02/1981US4270925 Method and apparatus for automatically determining chlorine and chlorine dioxide concentrations
06/02/1981US4270921 Microchromatographic device and method for rapid determination of a desired substance
05/1981
05/26/1981US4269710 Chromatographic apparatus
05/26/1981US4269608 Cooling the liquid sample by heat exchanging along the initial length of the apparatus to achieve trapping and prevent early vaporization
05/26/1981CA1101828A1 Composition for chromatography
05/26/1981CA1101827A1 Bimodal chromatographic resolving zone
05/26/1981CA1101785A1 Radial compression of packed beds
05/19/1981US4268269 Field test method for estimation of concentration of organic materials in water
05/19/1981US4268268 Method and apparatus for characterization of cells, particles, and liquids
05/14/1981WO1981001245A1 Methods to determine a diagnostic indicator of blood sugar conditions,and,liquid chromatographic columns therefor(cyanide free)
05/13/1981EP0028408A1 High temperature injection and vaporization system for gas chromatography
05/13/1981EP0028319A1 Method and apparatus for effecting a repeated chemical analysis of a process stream
05/12/1981US4267056 For chromatographic analysis
05/12/1981US4267054 Method for the chromatographic separation of soluble components in feed solution
05/05/1981US4266277 Chromatographic analysis of gaseous matter
05/05/1981US4266196 Gas detecting means utilizing electric discharge
05/05/1981US4265634 Chromatographic separation and quantitative analysis of ionic species
05/05/1981US4265536 Electrical zeroing of light beam
04/1981
04/29/1981EP0027601A2 Dosing device for gas chromatography
04/28/1981US4264817 Coaxial electron capture detector with thermionic emission electron source
04/28/1981US4264327 Method and apparatus for automatic competitive binding analysis
04/21/1981US4263144 Device for collecting and transferring particulate material
04/21/1981US4262520 Heating, inert gas vaporization of lower boiling hydrocarbons
04/14/1981US4262253 Constant alternating current conductivity detector for a chromatograph
04/14/1981US4261835 Thin layer and paper chromatography cones
04/14/1981CA1099441A1 Polysiloxane packed gas chromatographic columns
04/07/1981US4260680 Method and apparatus for the measurement of glucose content
04/02/1981WO1981000913A1 Microchromatographic device and method for rapid determination of a desired substance
03/1981
03/31/1981US4259572 Ionization of organic substances on conveyor means in mass spectrometer
03/31/1981US4259186 Gel filtration column
03/31/1981US4259079 Method and apparatus for electrical separation of molecules
03/31/1981US4258698 Solar heating apparatus
03/31/1981US4258564 Polymer characterization apparatus
03/25/1981EP0025639A1 Process for preparing porous cellulose spherical particles
03/24/1981US4258000 Poromeric matrix containing dissolved indicator
03/24/1981US4257884 Chromatography
03/24/1981US4257776 By chromatographic separation using a polyamide coated plate over which linoleic acid is deposited and heated to produce a color change
03/24/1981US4257772 Method and apparatus for chemical analysis of specimens
03/24/1981US4257259 Continuous analysis of beverages
03/17/1981US4256843 A hydrolyzed porous spherical gel a homopolymer of pentaerythritol dimethacrylate or a copolymer with a methacrylate; high speed chromatography
03/17/1981US4256842 Hydrophilic separating carrier and preparation thereof
03/17/1981CA1097519A1 Method of removing headspace volatiles and analysis thereof
03/11/1981EP0024566A1 An apparatus for the analysis of oxygen, nitrogen and hydrogen contained in metals
03/10/1981US4254656 Chromatographic analysis without calibration using dual detectors
03/10/1981US4254654 Modulated fluid detector
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