1
Leyba Manuel R: Indicator module and method of manufacturing same. Beckman Instrument, Steinmeyer R J, McCormack J J, March 25, 1975: US3873889 (60 worldwide citation)

A gas discharge indicator module comprises a flexible strip printed circuit with a flat alphanumeric gas discharge indicator tube connected at one end, a multiple contact electrical connector fastened at the other end, and the electronic circuit components associated with the indicator tube connecte ...


2
Jones Robert H, Johnston Michael B: Nitrogen constituent analysis. Beckman Instruments, Steinmeyer R J, Harder P R, April 15, 1975: US3877875 (41 worldwide citation)

A unitary system is provided with separate channels for detecting and analyzing different types of nitrogen-containing compounds, particularly those which may be encountered in waste treatment or in pollution control or in food product analysis. The channels are so designed that an injected sample i ...


3
Kaye Wilbur I: Simultaneous multiple measurements in laser photometers. Beckman Instruments, Steinmeyer R J, Mesaros J G, November 26, 1974: US3850525 (38 worldwide citation)

In a laser photometer of the type including means for focusing a laser beam onto a sample, means for receiving a cone of light issuing from the sample in an incremental angle .DELTA..theta. at a selectable angle .theta., means for focusing the cone of light onto the aperture of a field stop, and det ...


4
Neti Radhakrishna M, Turner George S: Chemiluminescent ammonia detection. Beckman Instruments, Steinmeyer R J, Harder P R, September 9, 1975: US3904371 (37 worldwide citation)

Ammonia content of a gaseous mixture is determined by converting the ammonia to nitric oxide and measuring the nitric oxide. A gaseous mixture sample is passed through a heated mixture of oxides of platinum group metals and/or copper oxide together with vitreous carbon whereby any gaseous ammonia is ...


5
Sternberg James C: Rate sensing batch analyzer. Beckman Instruments, Steinmeyer R J, Harder P R, December 31, 1974: US3857771 (31 worldwide citation)

A portable, automated chemical analyzer having a polarographic oxygen electrode submerged in a batch of stirred solution. The signal from the electrode is directly differentiated and amplified to produce a signal proportional to the time rate of change of oxygen concentration. The membrane of the po ...


6
Ogle David G: Mounting for liquid chromatograph column. Beckman Instruments, Steinmeyer R J, Mehlhoff F L, April 15, 1975: US3878099 (25 worldwide citation)

A water jacketed chromatograph resin column for a liquid chromatograph analyzer is provided with end fittings which may be attached to the column and the end fittings are secured to mounting brackets on a panel to relieve the water jacket and the column of tensile forces resulting from liquid pressu ...


7
Houser Edwin A, Schwindt Bernell W: Water quality analysis system with multicircuit single shell heat exchanger. Beckman Instruments, Steinmeyer R J, Harder P R, March 18, 1975: US3871444 (22 worldwide citation)

A modular water quality analysis system for steam electric power generating plants is disclosed which includes a novel single shell multicircuit heat exchanger having means to individually vary the rate of flow of cooling water through each of the multiple circuits therein so that the single heat ex ...


8
Soref Richard A: Liquid crystal electric field sensing measurement and display device. Beckman Instruments, Steinmeyer R J, Thomson J M, September 10, 1974: US3834794 (20 worldwide citation)

A flat panel, electric field controlled device is provided for the measurement and display of electrical parameters such as voltage, the voltage sensing effect being provided by a nematic liquid crystal medium having high positive dielectric anisotropy and placed in a thin flat-sided optically trans ...


9
Klein Gerald Lee, Meyer Richard Carl: Electrophoresis sample applicator. Beckman Instruments, Steinmeyer R J, Mesaros J G, October 1, 1974: US3839183 (19 worldwide citation)

This invention provides an apparatus and applicator for applying liquid sample to an electrophoretic membrane. The applicator comprises two parallel strips of flexible plastic film separated by a spacer along one edge. At the other edge the strips form fingers between which are suspended liquid samp ...


10
Wright Herschel E: Non-extruding lid seal for centrifuges. Beckman Instruments, Steinmeyer R J, Mehlhoff F L, August 26, 1975: US3901434 (19 worldwide citation)

A centrifuge rotor having chambers for sample containers and a cover is formed with fluid release openings in the cover to form what amounts to a pressure relief valve. The release openings communicate with a seal-ring groove in the cover. This guards against possible expulsion of the seal ring from ...