Patent International Class: G01N 30/40

«1Next »

Open channel solid phase extraction systems and methods
Inventor: Gjerde, et al. | Patent Number: 7879621

Silicon micro-machined fixed-volume back-flush injector having no unswept dead volume during injection
Inventor: Lo, et al. | Patent Number: 6575014

Multiuse pressure electric chromatographic device
Inventor: Yan | Patent Number: 6569325

Protein chromatography system
Inventor: Afeyan, et al. | Patent Number: 6344172

Method and apparatus for analyzing breath sample
Inventor: Satoh, et al. | Patent Number: 6341520

Acid or base generator and method of use
Inventor: Small, et al. | Patent Number: 6316271

Acid base or generator
Inventor: Small, et al. | Patent Number: 6316270

Acid or base generator and analyzer
Inventor: Small, et al. | Patent Number: 6315954

Selective removal of volatile substances injected into a chromatographic packing filled column
Inventor: Bertrand | Patent Number: 6311544

Method for separating components in liquid specimen and apparatus used in said method
Inventor: Nakamura, et al. | Patent Number: 6156195

Method for separating components in liquid specimen and apparatus used in said method
Inventor: Nakamura, et al. | Patent Number: 6149818

Method and apparatus for analyzing a breath sample
Inventor: Satoh, et al. | Patent Number: 6148657

Selective removal of volatile substances injected into a chromatographic packing filled column
Inventor: Bertrand | Patent Number: 6131440

Acid or base generator with chromatograph
Inventor: Small, et al. | Patent Number: 6036921

Reversible flow chromatographic binding assay
Inventor: Clark | Patent Number: 6007999

Analytical engine for gas chromatograph
Inventor: Wylie, et al. | Patent Number: 5983703

Liquid chromatograph apparatus with a switching valve
Inventor: Uematsu | Patent Number: 5958227

Backflushing system for gas chromatography
Inventor: Tipler | Patent Number: 5933357

Selective removal of volatile substances injected into a chromatographic packing filled column
Inventor: Bertrand | Patent Number: 5929321

Fully automated micro-autosampler for micro, capillary and nano high performance liquid chromatography
Inventor: Vissers, et al. | Patent Number: 5814742

Reversible flow chromatographic binding assay
Inventor: Clark | Patent Number: 5750333

Reversible flow chromatographic binding assay system, kit, and method
Inventor: Clark | Patent Number: 5726013

Reversible flow chromatographic binding assay
Inventor: Clark | Patent Number: 5726010

Chlorine quality monitoring method
Inventor: Capuano | Patent Number: 5654201

Fixed-volume injector with backflush capability
Inventor: Johnson | Patent Number: 5652398

Instrument for measuring non-methane organic gases in gas samples
Inventor: Klemp | Patent Number: 5595709

Vapor collector/desorber with non-conductive tube bundle
Inventor: Rounbehler, et al. | Patent Number: 5551278

Apparatus for gas chromatography
Inventor: Klemp, et al. | Patent Number: 5547497

Chlorine quality monitoring system and method
Inventor: Capuano | Patent Number: 5489535

Electrochromatographic preconcentration method
Inventor: Novotny, et al. | Patent Number: 5453382

Hydrocarbon analyzer and method of analyzing hydrocarbon
Inventor: Asano, et al. | Patent Number: 5392634

Hydrocarbon analyzer and method of analyzing hydrocarbon
Inventor: Asano, et al. | Patent Number: 5392634

Method and apparatus for injecting liquid into a capillary tube
Inventor: Schneider, et al. | Patent Number: 5358613

Selective detection with high speed gas chromatography
Inventor: Rounbehler, et al. | Patent Number: 5310681

Adsorbent trap for gas chromatography
Inventor: Peters, et al. | Patent Number: 5288310

Gas chromatography system with column bifurcation and tunable selectivity
Inventor: Sacks, et al. | Patent Number: 5281256

Interface device to couple gel electrophoresis with mass spectrometry using sample disruption
Inventor: Busch, et al. | Patent Number: 5208458

Mechanical gas chromatography injection valves and column multiplexing techniques
Inventor: Sacks, et al. | Patent Number: 5205845

Process and device for the vaporization injection of liquid samples in gas chromatographic analysis apparatuses
Inventor: Grob, et al. | Patent Number: 5174149

Sample collection and inlet systems for gas chromatography apparatus
Inventor: Sacks, et al. | Patent Number: 5141534

Thermal modulation inlet for gas chromatography system
Inventor: Sacks, et al. | Patent Number: 5141532

Hand-held sample gun for vapor collection
Inventor: Carroll, et al. | Patent Number: 5123274

Selective detection with high speed gas chromatography
Inventor: Rounbehler, et al. | Patent Number: 5099743

Vapor concentrator
Inventor: Rounbehler, et al. | Patent Number: 5098451

Gas chromatography system and methods
Inventor: Sacks, et al. | Patent Number: 5096471

Selective decomposition of nitrite esters and nitramines
Inventor: Rounbehler, et al. | Patent Number: 5092219

Selective detection of explosives vapors
Inventor: Fine, et al. | Patent Number: 5092218

Method of calibrating a vapor detector
Inventor: Achter, et al. | Patent Number: 5092217

Vapor collector/desorber with metallic ribbon
Inventor: Achter, et al. | Patent Number: 5092157

Vapor collector/desorber with tube bundle and metal foil
Inventor: Miskolczy | Patent Number: 5092156

High speed detection of vapors of specific compounds
Inventor: Rounbehler, et al. | Patent Number: 5092155

Gas chromatography
Inventor: Lubkowitz, et al. | Patent Number: 5057126

Chromatographic analyzer
Inventor: Szakasits, et al. | Patent Number: 5049509

Sorption separation apparatus and methods
Inventor: Stetter, et al. | Patent Number: 5047073

Apparatus for pre-concentration of a sample for spectroscopical reasons
Inventor: Fang | Patent Number: 5045196

Miniature devices useful for gas chromatography
Inventor: Goedert | Patent Number: 4935040

Method for the determination of phenols in water
Inventor: Melcher, et al. | Patent Number: 4913821

Flow divider for gas chromatographs
Inventor: Arnold, et al. | Patent Number: 4873058

Method and apparatus for chromatographic analysis, in particular of petroleum liquids
Inventor: Guieze, et al. | Patent Number: 4864843

Hydrocarbon group-type analyzer system
Inventor: Hayes, Jr., et al. | Patent Number: 4826603

Hydrocarbon group-type analyzer system
Inventor: Hayes, Jr., et al. | Patent Number: 4802986

Method of chromatographic analysis of a mixture of liquid substances and a gas chromatograph for carrying out the method
Inventor: Poshemansky, et al. | Patent Number: 4766760

Gas chromatography
Inventor: Dahlgren, et al. | Patent Number: 4553985

Automated sample concentrator for trace components
Inventor: Poole, et al. | Patent Number: 4500432

Assembly for connecting the column ends of two capillary columns
Inventor: Kolb, et al. | Patent Number: 4453954

Method and apparatus for injecting samples into gas chromatograph
Inventor: Brazhnikov, et al. | Patent Number: 4414857

Connecting device for pneumatic and/or hydraulic circuits in column chromatography
Inventor: Dosch, et al. | Patent Number: 4394263

Repetitive chromatographic apparatus
Inventor: Ahlstrom, Jr., et al. | Patent Number: 4359891

Apparatus for analyzing oxygen, nitrogen and hydrogen contained in metals
Inventor: Mikasa, et al. | Patent Number: 4305906

Methods and apparatus for continuous preparative chromatographic separation of fluid mixtures
Inventor: Miller, et al. | Patent Number: 4302222

Chromatographic analysis
Inventor: Mowery, Jr. | Patent Number: 4271697

Apparatus for the separation of a constituent from an atmosphere
Inventor: Jenkins | Patent Number: 4242107

Isolation and concentration of sample prior to analysis thereof
Inventor: Paul | Patent Number: 4180389

Automated temperature programmed preparative chromatography
Inventor: Favre, et al. | Patent Number: 4154583

Liquid column chromatographic separation
Inventor: Snell | Patent Number: 4102179

Liquid adsorption chromatographic apparatus and method
Inventor: Ramstad, et al. | Patent Number: 4042499

Chromatographic analysis
Inventor: Roof, et al. | Patent Number: 4007626

«1Next »