61
Ronald P Manginell, Gregory C Frye Mason: Chemical preconcentrator. Sandia Corporation, John P Hohimer, January 9, 2001: US06171378 (56 worldwide citation)

A chemical preconcentrator is disclosed with applications to chemical sensing and analysis. The preconcentrator can be formed by depositing a resistive heating element (e.g. platinum) over a membrane (e.g. silicon nitride) suspended above a substrate. A coating of a sorptive material (e.g. a micropo ...


62
Su Y Liu: Micro chemical analysis employing flow through detectors. World Precision Instruments, Chilton Alix & Van Kirk, August 22, 1995: US05444807 (56 worldwide citation)

The chemical properties of a flowing liquid analyte, the analyte comprising a solvent having an index of refraction which is the same as or closely approaches that of water, are determined by liquid chromatography or capillary electrophoreses wherein the analyte is caused to flow through an optical ...


63
Alfredo Choperena, Ross Krogh, Venkatesh Prasad, Gershon Giter: Device for automatic chemical analysis. Pasteur Sanofi Diagnostics, Fredrikson & Byron PA, December 2, 1997: US05693292 (54 worldwide citation)

This invention provides an automated chemical analyzer with improved processing flexibility and ease. In one embodiment of this invention, the analyzer includes an incubation station, a wash station and a read station. The incubation station includes an elongated, movable track to carry reaction ves ...


64
Nicolas Sarrut, Hubert Jeanson: Microfluidic method and device for transferring mass between two immiscible phases. Commissariat A l Energie Atomique, Oblon Spivak McClelland Maier & Neustadt L, August 7, 2012: US08236156 (54 worldwide citation)

A method of transferring mass of at least one solute between a liquid first phase and a fluid second phase that is immiscible with the first phase, the method comprising moving at least one droplet of said liquid first phase in a microfluidic device by using electric-type forces (electrowetting or d ...


65
Asaji Kondo: Test slide strip. Fuji Photo Film, Gerald J Ferguson Jr, Joseph J Baker, May 4, 1982: US04328184 (54 worldwide citation)

A plurality of test slides carrying thereon dry reagents for chemical analysis of fluid samples or a dry porous analysis layer are sandwiched and sealed between a continuous base sheet and a continuous cover sheet at equal intervals. A test slide strip having alternately slide holding portions and s ...


66
Lee M Smith, Robert E Benner, Douglas A Christensen, Joel M Harris, Carl W Johnson, Richard D Rallison: Raman spectroscopy apparatus and method for continuous chemical analysis of fluid streams. Process Instruments, Madson & Metcalf, May 12, 1998: US05751415 (53 worldwide citation)

Apparatus and methods for analyzing the chemical composition of fluid streams using Raman spectroscopy are disclosed. The invention is particularly useful in continuously analyzing a fluid stream containing petroleum products, aqueous or biological fluids. The apparatus includes a laser source for p ...


67
Shinichi Okano, Takashi Koizumi, Tadashi Uekusa: Incubator. Fuji Photo Film, Sughrue Mion Zinn Macpeak & Seas, April 22, 1986: US04584275 (53 worldwide citation)

An incubator is provided with an inlet, a measurement station and an outlet for chemical analysis slides, and a number of levers or pushing devices for stepwisely circulating the slides through the apparatus. The device is useful for uniformly incubating a plurality of chemical analysis slides or th ...


68
Raymond Newton, David Malcolm Lawes: Apparatus for automatic chemical analysis. Biotec Instruments, Lee & Smith, September 12, 1989: US04865811 (53 worldwide citation)

A sample duct in a carrier line is isolated by three-way valves blocking the flow of carrier or flushing liquid from reservoirs. The sample duct may be connected to a loading syringe and to a sample reservoir respectively by the valves. When the sample duct is connected into the carrier line, pressu ...


69
Alfredo Choperena, Ross Krogh, Venkatesh Prasad, Gershon Giter: Method and device for automatic chemical analysis. Pasteur Sanofi Diagnostics, Fredrikson & Byron PA, August 19, 1997: US05658799 (52 worldwide citation)

The invention provides a method for analyzing samples for different analytes. A plurality of assay resource stations are provided, each of which includes an assay resource capable of performing a predetermined operation upon a reaction vessel within a time cycle of fixed duration, as is an analyzer ...


70
Clifford Riley, Christopher J Mears: Automatic chemical analysis. Vickers, Wegner & Bretschneider, September 8, 1987: US04692308 (52 worldwide citation)

Apparatus for, and a method of, automatic chemical analysis. The apparatus comprises a conveyor system for delivering vials containing samples for analysis through an entry gate and identification arrangement to a series of analytical modules where a succession of tests is effected on each of the sa ...



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