1
Dietrich W Lubbers, Norbert Opitz: Method and arrangement for measuring the concentration of gases. Max Planck Gesellschaft zur Forderung der Wissenschaften e V, Michael J Striker, January 18, 1977: US04003707 (119 worldwide citation)

A method and an arrangement for measuring the concentration of gases in a mple includes the generation of a monochromatic light beam having predetermined color characteristic. An indicator generates light signals indicative of the concentration of the gases in a sample to be measured and includes a ...


2
Dietrich W Lubbers, Ernst Guilino: Spectral photometer for medical use in determining skin coloration. Max Planck Gesellschaft zur Forderung der Wissenschaften, Michael J Striker, December 30, 1980: US04241738 (116 worldwide citation)

A housing contains a light source, a monochromator, a photosensitive unit and an oscilloscope-type display. A flexible bundle of fiber-optic elements extends from within the housing out, and is provided at its outer end with a spacing ring. The spacing ring is placed against a skin surface, holding ...


3
Dietrich W Lubbers, Hellfried Karpf: Sensing device. AVL Medical Instruments, Watson Cole Grindle & Watson, October 11, 1994: US05353792 (56 worldwide citation)

In order to simultaneously determine the concentrations of different analytes in several places in a tissue by means of a thin, biocompatible tube or cannula which is inserted into the tissue, the tube is provided with several areas along its length which contain either identical or different optica ...


4
Dietrich W Lubbers: Optical measurement of concentration. Max Planck Gesellschaft zur Forderung der Wissenschaften e V, Michael J Striker, December 22, 1981: US04306877 (56 worldwide citation)

The concentration of a substance of interest is measured by exposing a peable-membrane face of an indicator chamber containing an indicator to the substance, monochromator radiation being incident upon the indicator through a transparent wall of the indicator chamber, the exiting radiation being rec ...


5
Norbert Opitz, Dietrich W Lubbers: Arrangement for measuring diffusing particles. Max Planck Gesellschaft, Michael J Striker, July 1, 1986: US04597392 (42 worldwide citation)

An arrangement for measuring diffusing particles has at least one monochromatic radiation source and a light measuring device, as well as at least one material limited particle-permeable indicator chamber provided with an optical fluorescent indicator which is optically changeable by the particles t ...


6
Dietrich W Lubbers, Hellfried Karpf: Sensor arrangement for direct or indirect optical determination of physical or chemical properties. AVL Medical Instruments, Watson Cole Grindle & Watson, November 29, 1994: US05368027 (41 worldwide citation)

In a sensor arrangement for direct or indirect optical determination of physical or chemical parameters, in human and animal bodies, the sensor arrangement including an indicator cell which is permeable to the chemical substance or physical quantity to be measured and which contains one or more indi ...


7
Norbert Opitz, Dietrich W Lubbers: Fluorometer. Max Planck Gesellschaft zur Foerderung der Wissenschaften, Michael J Striker, February 17, 1987: US04643877 (29 worldwide citation)

In order to increase measuring sensitivity of a fluorometer, a transmitter of monochromatic test light beam is arranged opposite a receiver of a measuring light beam. A measuring chamber including a fluorescent indicator space is arranged between the transmitter and the receiver. The distance betwee ...


8
Dietrich W Lubbers, Albert Huch: Transcutaneous monitoring of critical perfusion-efficiency situations. Max Planck Gesellschaft fuer Foerderung der Wissenschaften, Michael J Striker, October 28, 1980: US04230122 (28 worldwide citation)

First and second probes are laid against the skin to transcutaneously measure perfusion and e.g., oxygen concentration and generate corresponding first and second signals. These signals are fed to a signal-processing unit which triggers an alarm whenever changes in these signals meet predetermined r ...


9
Dietrich W Lubbers: Membranes for optodes. Max Planck Gesellschaft zur Forderung der Wissenschaften e V, Michael J Striker, June 9, 1981: US04272485 (27 worldwide citation)

In an indicator chamber (e.g., optode) arrangement including an indicator d a membrane which surrounds it and is impermeable to it, a carrier substance is provided within said membrane for transport of particles to be measured into the indicator chamber. Said carrier is mobile within said membrane. ...


10
Norbert Opitz, Dietrich W Lubbers: Sensor for measuring physical parameters of concentration of particles. Max Planck Gesellschaft, Michael J Striker, December 26, 1989: US04889690 (26 worldwide citation)

A sensing arrangement for measuring physical parameters or concentration of particles is assembled of a laminar source of luminescent radiation. Fluorescent indicating particles are arranged in an indicator layer adjoining one major side of the laminar light source. The indicator layer adjoins a mea ...