Patents
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)
12/1978
12/05/1978US4128476 Carrier composition control for liquid chromatographic systems
12/05/1978US4128008 Concentration valve for a gas detecting apparatus, or the like
11/1978
11/28/1978US4127386 Process and system for measuring sulfur dioxide pollution
11/21/1978US4126554 Selectively marked thin-layer chromatographic plate
11/21/1978CA1042988A1 Dual ion chromatograph using parellel columns
11/14/1978US4125464 Method and apparatus for multiple development of thin-layer chromatography plates
11/14/1978CA1042596A1 Method for preparation of anion exchangers by substitution of hydraulic polymeric gels
11/07/1978US4124699 Alumina-based bodies with large pores, produced by agglomeration
11/07/1978US4124358 Sample-injection device for process gas chromatography with capillary columns
10/1978
10/31/1978US4123498 Process for separating fission product molybdenum from an irradiated target material
10/31/1978US4123236 Gas chromatograph device
10/24/1978US4121859 Pressure tight seal
10/24/1978CA1040988A1 Apparatus and method to detect chloromethyl methyl ether
10/17/1978US4120661 Sampling device
10/17/1978US4120205 Device for the repeated reproducible delivery of definite variable amounts by volume
10/10/1978US4119120 Fluid switch
10/10/1978CA1040078A1 Method for constituent analysis with thin-layer reactant mixture
10/03/1978US4118347 Filler for liquid chromatography
10/03/1978US4117727 Bubble sensor and method
09/1978
09/26/1978US4116837 High pressure liquid chromatography apparatus
09/26/1978US4116836 Monolithic glass
09/26/1978US4116046 Liquid chromatography system
09/19/1978US4114422 Method of monitoring diet
09/12/1978US4112766 Fluid actuated valve
09/12/1978US4112743 Step-wise gradient carrier for liquid chromatography
09/12/1978US4112739 Process and apparatus for the isostatic measurement of the permeability of a material to the passage therethrough of a gas or vapor
09/12/1978CA1038510A1 Automated quantitative analysis of ionic species
09/12/1978CA1038196A1 Device for placing samples in a chromatograph_
09/12/1978CA1038195A1 Separation of isoenzymes by ion exchange chromatography
09/05/1978US4112302 Gas monitor
09/05/1978US4112297 Interface for use in a combined liquid chromatography - mass spectrometry system
09/05/1978US4111859 Method of preparation of ion exchangers by alkylation and hydroxyalkylation of polymeric hydrophilic anion exchangers
09/05/1978US4111838 Composition for chromatography
09/05/1978US4111643 Vent control for a thermal system
09/05/1978US4111554 Process for the specific quantitative detection of sulfur compounds and apparatus for carrying out this process
08/1978
08/29/1978US4109510 Fluid measuring apparatus
08/29/1978CA1037287A1 Electromagnetic metering pump for chromatograph column
08/22/1978US4109075 Separation of saccharides by exclusion chromatography
08/22/1978US4108603 Method for rapid analysis of hemoglobin variants by high speed liquid chromatography
08/15/1978US4107041 Electromatographic separating apparatus and system
08/15/1978US4107014 Colored proteins
08/15/1978US4106908 Method for the determination of the organic carbon content in mineral-containing materials
08/15/1978CA1036538A1 Electric surface area meter
08/08/1978US4105499 Heart attack screening method, apparatus and kit for same
08/08/1978US4105426 Silica, refractory metal oxides
08/01/1978US4104208 Process for preparation of hard and porous polyvinylalcohol gels
07/1978
07/25/1978US4102782 Method of sample introduction in the micro liquid chromatography and the apparatus therefor
07/25/1978US4102648 Activated carbon adsorber, flame ionization detector
07/25/1978US4102647 Removal of condensates from light gaseous streams
07/25/1978US4102179 Liquid column chromatographic separation
07/18/1978US4101461 Method for preparation of anion exchangers by substitution of hydrophilic polymeric gels
07/18/1978US4101460 High performance ion exchange composition
07/18/1978US4101278 Ionization detector utilizing tritiated scandium with an acceptable tritium emanation rate at high temperature
07/18/1978US4100790 Electronic orsat for gas analysis
07/11/1978US4100412 Selective multichannel optical time-shared detector for chromatography
07/11/1978US4100149 Method of separating proteins by ion exchange
07/04/1978US4098592 Temperature control system for chromatographic apparatus
06/1978
06/27/1978US4097420 Method for preparation of macroporous amphoteric ion exchangers with highly crosslinked hydrophilic polymeric matrix
06/27/1978US4097239 Two-flame burner for flame photometric detection
06/27/1978US4096908 Heating and cooling enclosure for a gas chromatographic column
06/27/1978US4096746 Flow controller-flow sensor assembly for gas chromatographs and the like
06/27/1978US4096734 Method of removing headspace volatiles and analysis thereof
06/20/1978US4096136 Method of selectively removing lipoprotein from blood plasma or serum using sulfated carbohydrate ion-exchangers
06/20/1978US4095950 Method for the chromatographic analysis of a technetium-containing mixture
06/20/1978US4095455 Pneumatic detector for chromatographic analyzer
06/13/1978US4094833 Vinylic group containing dextran derivative gel in particle form for separation purposes
06/13/1978US4094196 Sample injection with automatic cleaning of sampling conduit
06/13/1978US4094195 Novel seal and apparatus including same
06/06/1978US4093550 Column for high pressure liquid chromatography
05/1978
05/16/1978US4089207 Accessory for gas concentrator-gas chromatograph analyzer
05/09/1978US4088458 Heater block for low cost gas chromatograph
05/09/1978US4088407 High pressure fluorescence flow-through cuvette
04/1978
04/25/1978US4086051 System for preparing packed columns and coated capillary tubes useful in gas chromatography
04/18/1978US4084440 Chromatograph injection system
04/11/1978US4084248 Method and apparatus for error correction
04/11/1978US4084246 Pulse generator
04/11/1978US4084091 Chromatographic method for determining additive concentration in gasoline
04/11/1978US4083702 Chromatographic column fittings
04/11/1978US4083690 Analysis of diacetyl- odor components, kjeldahl determinations
04/11/1978US4083323 Pneumatic system for solder leveling apparatus
04/11/1978US4083227 Hydrocarbon vapor analyzer
03/1978
03/21/1978US4080658 System for maintaining below range synchronization in error correcting apparatus
03/21/1978US4080171 Rapid analysis of trace components contained in a liquid
03/14/1978US4079009 Apparatus for multiple column chromatography
03/07/1978US4077886 Centrifugal liquid chromatograph
02/1978
02/28/1978US4076663 Water absorbing starch resins
02/14/1978US4073725 Method and apparatus for liquid chromatography under elevated pressure
02/07/1978US4072846 Control system for a chromatography apparatus oven door
01/1978
01/31/1978US4070913 Sample dilution
01/24/1978US4070286 Macroporous microspheroids and a process for their manufacture
01/24/1978US4070285 Filling
01/24/1978US4070284 Liquid chromatography and apparatus for the same
01/24/1978US4070283 Controlled surface porosity particles and a method for their production
01/24/1978US4070169 Chromatographic column oven
01/24/1978US4070155 Apparatus for chromatographically analyzing a liquid sample
01/17/1978US4068528 Two position rotary valve for injecting sample liquids into an analysis system
01/10/1978US4068185 Current balancing circuit for use with chromatographic system detector
01/10/1978US4068067 Process for the production of water-adsorbing cellulose ethers
01/10/1978US4067227 Hydrogen transfer system for gas chromatograph
01/10/1978US4067226 Chromatographic apparatus