1
David P Newman: Membrane for enzyme electrodes. The Yellow Springs Instrument Company, Biebel French & Nauman, September 7, 1976: US03979274 (530 worldwide citation)

A laminated membrane for use with an enzyme electrode without the need for use of a compensating electrode. The laminated membrane comprises a layer of essentially homogeneous material such as cellulose acetate or silicone rubber which will prevent passage of even low molecular weight interfering ma ...


2
Jay M Johnson: Method for quantitatively determining a particular substrate catalyzed by a multisubstrate enzyme. The Yellow Springs Instrument Company, Biebel French & Nauman, September 13, 1983: US04404066 (300 worldwide citation)

A method for control of relative enzyme activity for analytical purposes. The activity of a multisubstrate enzyme may be controlled as a function of the electrical potential applied to the enzyme. The enzyme is preferrably incorporated into a thin layer electrochemical cell laminate having exterior ...


3
Jay M Johnson: Substrate specific galactose oxidase enzyme electrodes. The Yellow Springs Instrument Company, Biebel French & Nauman, October 26, 1982: US04356074 (281 worldwide citation)

The relative specificity of the enzyme galactose oxidase for various substrates is controlled as a function of the electrical potential applied to the enzyme. The enzyme is incorporated into a thin layer electrochemical cell laminate having exterior membrane layers and an interior enzyme layer. An e ...


4
David P Newman: Membrane for enzyme electrodes. The Yellow Springs Instrument Company, Biebel French & Nauman, February 14, 1978: US04073713 (272 worldwide citation)

A laminated membrane for use with an enzyme electrode without the need for use of a compensating electrode. The laminated membrane comprises a layer of essentially homogeneous material such as cellulose acetate or silicone rubber which will prevent passage of even low molecular weight interfering ma ...


5
Matthew L Smith, Steven J Fondriest: Electrochemical gas sensor. The Yellow Springs Instrument Company, Biebel & French, June 8, 1993: US05217595 (270 worldwide citation)

An electrochemical sensor for sensing a gas dissolved in a liquid. The sensor includes a probe having a cylindrical body and a rounded face. A working electrode, a reference electrode and an auxiliary electrode are buried in the probe body and have distal ends reaching conformingly to the face. A pu ...


6
Robert B Spokane: Chemically wired fructose dehydrogenase electrodes. The Yellow Springs Instrument Company, Biebel & French, March 29, 1994: US05298144 (218 worldwide citation)

An enzyme electrode is disclosed for use in voltammetric systems wherein a PQQ dehydrogenase enzyme is chemically bonded to a water soluble polyvinylpyridine osmium bipyridine polymer. The enzyme and polymer are adsorbed onto the surface of the electrode with the polymer providing direct electron tr ...


7
David P Newman: Optical temperature transducer. The Yellow Springs Instrument Company, Biebel French & Nauman, September 8, 1981: US04288159 (22 worldwide citation)

A substantially solid temperature-dependent light absorbing mass including multiple-faceted randomly oriented and distributed reflecting chips is optically coupled on the terminal end of a fiber optical light conductor.


8
James M Campbell: Fast/accurate calibration for a physical property sensor. The Yellow Springs Instrument Company, Biebel French & Nauman, August 16, 1988: US04764879 (15 worldwide citation)

The unique signal generating characteristics of a sensing transducer are defined by integrally incorporating an encoded form of the characteristics into the sensing transducer such that the encoded characteristics can be read by a data reader incorporated into a signal conditioner used with the sens ...


9
Jay M Johnson: Support layer for enzyme electrode laminated membranes. The Yellow Springs Instrument Company, Biebel & French, May 28, 1996: US05520788 (14 worldwide citation)

Improved Newman type enzyme containing laminated membranes are disclosed for use in conjunction with polarographic cells to measure analyte concentration in solutions. The laminated membranes comprise a semipermeable outer, support layer including super large pores of greater than about 200 .ANG. in ...


10
Robert H Wills: Method and apparatus for measuring soil salinity. The Yellow Springs Instrument Company, Biebel French & Nauman, February 24, 1987: US04646000 (12 worldwide citation)

A method for measuring soil salinity measures the low frequency permittivity of a soil sample at one or more frequencies below 2 megahertz and determines the salinity of the soil sample based on the measured real part of the permittivity. Apparatus for performing the method comprises a soil sample h ...