21
Craig M Whitehouse, Daniel R Snyder, Ronald B Luther: Assembly with septum fitting for connecting adaptor and fluid tube. DRS Infusion Systems, Luther Medical Products, Willie Krawitz, December 17, 1985: US04559043 (114 worldwide citation)

An assembly for connecting needles and catheters in I.V. applications, chemical analysis, etc., includes a leak proof, sterile, self-sealing septum from which the needle is inserted. When the needle is retracted from the septum, the septum will reseal and thus maintain a leak-proof, sterile seal. Th ...


22
Elton M Botts: Control unit for oil wells. Energy 76, Clarence A O Brien, Harvey B Jacobson, July 25, 1978: US04102394 (114 worldwide citation)

A control unit for oil wells for maximizing the efficiency of a producing oil well field, including the use of a variable speed AC motor powering each oil well pump jack, which enables the operator to control the strokes per minute on the pump unit and adjust the speed of the upstroke relative to th ...


23
Ryo Miyake, Masaharu Ishii, Hideo Enoki, Isao Yamazaki, Kazumichi Imai, Tadafumi Kuroishi, Yu ming Hsueh: Apparatus for chemical analysis with detachable analytical units. Hitachi, Evenson McKeown Edwards & Lenahan, May 21, 1996: US05519635 (109 worldwide citation)

In order to provide an apparatus for chemical analysis capable of eliminating time consuming changing connections of flow paths and analytical elements, and of operating for analysis without any special knowledge, the apparatus for chemical analysis comprises a main body of analytical apparatus prov ...


24
Kyuji Rokugawa: Automatic chemical analysis reagent distribution and analysis apparatus. Kabushiki Kaisha Toshiba, Finnegan Henderson Farabow Garrett Dunner, July 4, 1989: US04844868 (108 worldwide citation)

An analysis apparatus is disclosed, which comprises guide rails for supporting a plurality of sample-containing reaction tubes in a straight row, a plunger for moving the reaction tubes supported on the guide rails in the direction of arrangement, a first rotary table for supporting a plurality of s ...


25
Yuxiang Zhou, Litian Liu, Ken Chen, Depu Chen, Jia Wang, Zewen Liu, Zhimin Tan, Junquan Xu, Xiaoshan Zhu, Xuezhong He, Wenzhang Xie, Zhiming Li, Xiumei Liu: Individually addressable micro-electromagnetic unit array chips. Aviva Biosciences, David Preston, David R Preston & Associates, March 12, 2002: US06355491 (108 worldwide citation)

This invention provides electromagnetic chips and electromagnetic biochips having arrays of individually addressable micro-electromagnetic units, as well as methods of utilizing these chips for directed manipulation of micro-particles and micro-structures such as biomolecules and chemical reagents. ...


26
J Michael Ramsey: Apparatus and method for performing microfluidic manipulations for chemical analysis and synthesis. Lockheed Martin Energy Research Corporation, Dann Dorfman Herrell and Skillman, January 4, 2000: US06010608 (101 worldwide citation)

A microchip laboratory system and method proved fluid manipulations for a variety of applications, including sample injection for microchip chemical separations. The microchip is fabricated using standard photolithographic procedures and chemical wet etching, with the substrate and cover plate joine ...


27
Lloyd W Burgess Jr, Don S Goldman: Thin-film spectroscopic sensor. The Board of the University of Washington, Battelle Development Corporation, Seed and Berry, January 21, 1992: US05082629 (97 worldwide citation)

There is disclosed an integrated spectrometer for chemical analysis by evanescent electromagnetic radiation absorption in a reaction volume. The spectrometer comprises a noninteractive waveguide, a substrate, an entrance grating and an exit grating, an electromagnetic radiation source, and an electr ...


28
Ramesh M Shah, Thomas H Ridgway: Chemical analyzer. Data Chem, Frost & Jacobs, June 19, 1990: US04935875 (93 worldwide citation)

An automatic chemical analyzer for the analysis of physiological samples. A scanning monochromatic spectrophotometer may be used to determine the absorbance of the sample under control of a central processing unit. Outputs from one of several ion selective electrodes may also be selected by the syst ...


29
Hoskins Douglas Haig, Horne Thomas, Jarman Graham Roger, Dunsmore Arthur William: Automatic chemical analysis apparatus. Coulter Electronics, Silverman & Cass, May 13, 1975: US3883305 (93 worldwide citation)

An automatic chemical analysis apparatus having separate closed-looped conveyors for sample and reactant containers. At a fixed location, sample portions from a given sample are transferred to a serial sequence of reactant containers. Colourimetric testing is arranged such that all of the reactant p ...


30
Michael Jordan: Automated multiple-purpose chemical-analysis apparatus. Technicraft, Kenway & Jenney, April 20, 1982: US04325910 (93 worldwide citation)

Analysis apparatus with flexible multi-analysis capability, suitable for example for biochemical constituent analysis, has a single channel of reaction vessels arranged to receive reagents from any of a battery of reagent reservoirs and has photometer elements from measuring the reaction in each rea ...



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