1
James Gerard Connery, Emil Christopher Muly, Robert Morgan Taylor: Apparatus for electrolytically determining a species in a fluid and method of use. Leeds & Northrup Company, William G Miller Jr, Raymond F MacKay, February 28, 1978: US04076596 (296 worldwide citation)

An electrolytic cell for measuring the concentration of a species such as oxygen is constructed by depositing closely spaced interleaved inert electrode surfaces on the surface of an insulating substrate and covering the electrode surfaces with a thin film of electrolyte and permeable membrane. The ...


2
Peter J Clack, George R Moreland: Auto-ranging glucose measuring system. Leeds & Northrup Company, Raymond F MacKay, February 10, 1976: US03937615 (53 worldwide citation)

An auto-ranging glucose measuring system including a device capable of mixing a glucose containing solution and a diluent in a variable ratio, a glucose oxidase enzyme converter column for converting the diluted glucose solution to hydrogen peroxide as one of the products, an amperometric detector f ...


3
Edgar Lawrence Eckfeldt: Spectrochemical analyzer using surface-bound color reagents. Leeds & Northrup Company, William G Miller Jr, Raymond F MacKay, December 21, 1976: US03998591 (52 worldwide citation)

A spectrochemical analyzer utilizing a transparent medium such as quartz which has a color reagent coating the surface. When light is directed into the transparent medium, the magnitude of internal surface reflection varies with the change in absorptivity resulting from a color change in the reagent ...


4
Ervin T Raber: Thermocouple circuit detector for simultaneous analog trend recording and analog to digital conversion. Leeds & Northrup Company, Raymond F MacKay, August 3, 1976: US03973184 (40 worldwide citation)

An improved thermocouple circuit condition detector for use in a measuring system requiring simultaneous analog trend recording and analog to digital conversion is disclosed. For analog to digital conversion the circuit testing period must be very short to fit in the time interval between conversion ...


5
James J Hitt, George C Mergner: Differential capacitance measuring circuit. Leeds & Northrup Company, Raymond F MacKay, William G Miller Jr, March 11, 1980: US04193063 (37 worldwide citation)

The displacement of the diaphragm in a differential pressure sensor of the differential capacitor type produces an output signal substantially linearly related to the displacement. The capacitors are charged in parallel from a constant current source for a fixed period of time and discharged through ...


6
Edward Leonhardt Weiss: Method and optical means for determining dimensional characteristics of the particle distribution in a collection of particles. Leeds & Northrup Company, William G Miller Jr, Raymond F MacKay, July 26, 1977: US04037965 (34 worldwide citation)

The far-field diffraction pattern produced by illuminating a collection of particles with a coherent light source is spatially modulated by a filter mask having a first aperture. The aperture is shaped to pass a total light flux proportional to a particular moment of the particle distribution over a ...


7
David L Fletcher, Walter O Stadlin: Measuring system. Leeds & Northrup Company, William G Miller Jr, Raymond F MacKay, December 16, 1980: US04240149 (31 worldwide citation)

There is provided a method for measuring a parameter whose value is calculable as an integral with time of a function of at least one variable so as to make possible the use of a microprocessor when measurements of such variables are desired. The variable is sampled periodically at a frequency async ...


8
Howard S Hoopes: Digital signal linearizer. Leeds & Northrup Company, William G Miller Jr, Raymond F MacKay, February 17, 1976: US03939459 (30 worldwide citation)

A digital signal linearizer for obtaining a linear digital output from a non-linear input. The output voltage of a thermocouple is converted to a train of pulses by a dual slope analog to digital converter. The number of pulses in the pulse train is proportional to the voltage and is linearized by a ...


9
Ronald Dale Baxter: Small-size high-performance radiation thermopile. Leeds & Northrup Company, Raymond F MacKay, William G Miller Jr, September 5, 1978: US04111717 (29 worldwide citation)

A thermopile type radiation detector for use in radiation pyrometry having small size and high performance in which the thermopiles are formed by evaporating the thermocouple leads onto a thin substrate together with a pattern distribution of thermocouple junctions that produces an output that is mo ...


10
Ronald D Baxter, Paul J Freud: Thin film resistance thermometer device with a predetermined temperature coefficent of resistance and its method of manufacture. Leeds & Northrup Company, William G Miller Jr, Raymond F MacKay, February 22, 1983: US04375056 (29 worldwide citation)

A thin film resistance thermometer is manufactured to have a predetermined temperature coefficient of resistance while minimizing the amount of metal in the film. The process involves the production of a metal film deposit on an insulating substrate such that the film deposited has a bulk coefficien ...