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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01/03/1978 | US4066879 Means and method for controlling eluent gradient in liquid chromatography |
01/03/1978 | US4066411 N-nitroso compound analyzer with sample atomization |
01/03/1978 | US4066409 Oxidizing organic nitrogen compounds |
01/03/1978 | US4066406 Process and apparatus for the voltammetric measurement of the quantity or mass of separated sample components |
01/03/1978 | US4066402 Thermal conductivity gas chromatograph of nitrogen and carbon dioxide products |
01/03/1978 | US4066183 Chromatographic septum having polyimide coating |
12/27/1977 | US4065384 Graft thin layer chromatography |
12/27/1977 | US4064908 Combination needle flow control and shut-off valve for precision instruments |
12/20/1977 | US4064512 Data recording apparatus |
12/20/1977 | US4064041 Silica gel, particle sizes |
12/13/1977 | US4063156 Assymetric cylinder electron capture detector |
12/13/1977 | US4063077 Solvent programmer controller |
12/13/1977 | US4062240 Dosing device for a liquid chromatograph |
12/06/1977 | US4061828 Modified, grafted mineral carriers |
11/29/1977 | US4060517 Continuous manufacture of polyamides |
11/29/1977 | US4059994 Pneumatic chromatograph |
11/22/1977 | US4059523 Column for use in high speed liquid chromatography |
11/22/1977 | US4059406 Electrochemical detector system |
11/22/1977 | US4059009 Liquid chromatography system |
11/15/1977 | US4058460 Horizontal flow-through coil planet centrifuge without rotating seals |
11/15/1977 | US4057998 Chromatograph, more particularly for gas phase chromatography |
11/15/1977 | US4057997 Sample preparation |
11/01/1977 | US4056468 Isolation of component materials of aqueous solutions soluble in lipophilic solvents |
11/01/1977 | US4055987 Liquid chromatograph/mass spectrometer interface |
10/25/1977 | USRE29454 Method for producing a gradient elution |
10/25/1977 | US4055493 Method for opening a high-density packed column in liquid chromatography |
10/25/1977 | US4055072 Apparatus for measuring a sorbate dispersed in a fluid stream |
10/18/1977 | US4054432 Ethoxycarbonyl substituted polyphenylene resin |
10/18/1977 | US4054414 Gas chromatographic method for the multi-elemental microanalysis of organic materials |
10/18/1977 | US4054384 Sample-background-signal autocancellation in fluid-sample analyzers, using symmetrical time-delay or time-averaging |
09/27/1977 | US4051025 Preparative countercurrent chromatography with a slowly rotating helical tube array |
09/27/1977 | US4050911 Gas chromatograph oven |
09/13/1977 | US4048499 Infrared absorption spectroscopy of liquids employing a thermal detector |
09/13/1977 | US4048416 Thiopolymers, their derivatives and methods for their preparation and use |
09/13/1977 | US4047892 Cyclohexane |
09/06/1977 | US4046634 Assay of isoenzymes by ion exchange chromatography |
09/06/1977 | US4045998 Temperature control system |
08/30/1977 | US4045353 High-energy radiation induced polymerization on a chromatographic solid support |
08/30/1977 | US4045343 High pressure liquid chromatography system |
08/30/1977 | US4044593 Chromatograph |
08/23/1977 | US4044257 Retention time chromatograph employing an IR absorption spectrographic detector |
08/23/1977 | US4043906 Method and apparatus for reducing the transient effects of liquid compressibility in a liquid chromatography system |
08/23/1977 | US4043202 Sample injection system for analyzers |
08/16/1977 | US4042885 Zeroing circuit |
08/16/1977 | US4042499 Liquid adsorption chromatographic apparatus and method |
08/16/1977 | US4042350 Methods and applications of preparative scale chromatography |
08/16/1977 | US4042327 Liquid chromatography, reversible complexes |
08/16/1977 | US4042326 Or bis-chloromethyl ether with improved sensitivity |
08/09/1977 | US4040805 Personal monitoring device, or dosimeter, for measuring exposure of personnel to organic vapors |
08/02/1977 | US4039652 Antigens, antibodies |
08/02/1977 | US4038874 Device for the insertion of samples into a chromatography column |
07/26/1977 | US4038055 Gas chromatograph for continuous operation with infrared spectrometer |
07/26/1977 | US4038053 Method and apparatus for introducing liquid samples into a gas chromatographic column |
07/19/1977 | US4036704 Liquid chromatographical method |
07/19/1977 | US4036063 Sample dilution |
07/19/1977 | US4036062 Sample dilution |
07/12/1977 | US4035168 Glass beads, glass wool |
07/12/1977 | US4035086 Multi-channel analyzer for liquid chromatographic separations |
07/05/1977 | US4033720 Detection |
07/05/1977 | US4033171 Pneumatic detector for chromatographic analyzer |
06/28/1977 | US4032445 Liquid chromatography pumping system with compensation means for liquid compressibility |
06/28/1977 | US4032296 Electrolytic conductivity detector system |
06/21/1977 | US4031201 Fibres incorporating antibodies, antigens and antisera, method for their preparation and their use |
06/21/1977 | US4030887 Catalysts |
06/21/1977 | US4030369 Automatic control system for vacuum loop sample injection system |
06/14/1977 | US4029416 Sample-background-signal autocancellation in fluid-sample analyzers |
06/07/1977 | US4028617 Ionization detector utilizing electric discharge |
06/07/1977 | US4027983 Novel gasket and flow cell comprising same |
05/31/1977 | US4027163 Method of compensating for quenching effect of substance contained in a sample gas the radioactivity of which is to be measured by a radioactivity detector and apparatus for performing the same |
05/31/1977 | US4026803 Chromatographic column with improved end fittings |
05/24/1977 | US4024752 Method and apparatus for simple field test to determine final boiling point of a volatile liquid sample |
05/17/1977 | US4024061 Pulse dampers for liquid chromatography |
05/10/1977 | USRE29209 Method and apparatus for continuously sensing the condition of a gas stream |
05/10/1977 | US4022065 Calibrated sample delivery apparatus accommodating offset error |
04/26/1977 | US4019372 Chromatographic detector system |
04/19/1977 | US4018685 Automatic liquid mixing device |
04/12/1977 | US4017528 Preparation of organically modified silicon dioxides |
04/12/1977 | US4017262 Chromatographic apparatus for analysis of ionic species |
04/05/1977 | US4016074 Chromatographic separation |
04/05/1977 | US4015939 Competitive binding thyroid assay with improved bound-free separation step |
03/29/1977 | US4014798 Insoluble polyelectrolyte and ion-exchange hollow fiber impregnated therewith |
03/29/1977 | US4014793 Detecting apparatus for liquid chromatography |
03/29/1977 | US4014711 Separation of fructose from a mixture of sugars |
03/22/1977 | US4013913 Ion detection electrode arrangement |
03/22/1977 | US4013364 Baseline correction in densitometrical measurements |
03/08/1977 | US4011451 Novel photometric system |
02/15/1977 | US4007626 Vaporizing volatile components of a liquid sample, backflushing |
02/08/1977 | US4006990 Convergent light illuminated flow cell for liquid chromatography |
02/08/1977 | US4006624 Pneumatic chromatograph |
02/01/1977 | US4006350 Method for performing a separating analysis |
02/01/1977 | US4006069 Polymeric flat plate and gel enclosed in the open cells |
01/25/1977 | US4005187 Diagnostic test method |
01/25/1977 | US4005137 Adsorption on silica gel |
01/25/1977 | US4004884 Time division metering system |
01/25/1977 | US4004881 Apparatus for generating carrier gas-test specimen vapor mixtures for delivery into a gas chromatograph |
01/25/1977 | US4004548 Chromatographic spotter |
01/18/1977 | US4003679 High pressure pump with metering |
01/18/1977 | US4003257 Gas chromatography by adsorption on 2,6-diphenyl-para-phenylene oxide porous polymer |
01/18/1977 | US4003243 Method of analysis by liquid-phase chromatography |
01/11/1977 | US4002070 Sample injection system |