Jean Pompei, Francis Pierrot: Polarographic cell. U S Philips Corporation, Frank R Trifari, Norman N Spain, July 11, 1978: US04100048 (263 worldwide citation)

A polarographic cell for measuring partial pressure of oxygen in a fluid in which the detector electrode and the reference electrode are immersed in an electrolyte at least partially absorbed in a rigid insulating material.

Wilfred Andre Maria Snijders, Nicolaas Alphonsus Maria Verhoeckx, Petrus Josephus VAN Gerwen, Hendrik Arie VAN Essen: Modulation and filtering device. U S Philips Corporation, Frank R Trifari, Simon L Cohen, January 11, 1977: US04003002 (146 worldwide citation)

A digital data transmitter is described, whose line carrier frequency need not be an integral multiple of one half the clock frequency of the digital input signal. Use is made of a digital filter for increasing the sampling frequency to a value which is twice the modulator carrier wave frequency.

Richard B Liebert: Electrophoretic image display having an improved switching time. North American Philips Corporation, Frank R Trifari, Norman N Spain, January 31, 1978: US04071430 (132 worldwide citation)

An electrophoretic visual display device using an electrophoretic suspension with pigment particles in a dielectric suspending liquid and a dye for contrasting color, all enclosed in a unit comprising a transparent electrode spaced from at least one segmented electrode by an insulating member; a mes ...

Bernhard Hill, Rudiger Pepperl, Johann Kruger: Optical storage disk system with disk track guide sectors. U S Philips Corporation, Frank R Trifari, Simon L Cohen, June 6, 1978: US04094013 (92 worldwide citation)

A storage disk comprising at least one data track which is composed of spiral-shaped turns or concentrical turns, the data being arranged in the form of data blocks on the turns so that between the data blocks alternately a guide segment or a blank segment is present. The lengths of the unit, measur ...

Julian R A Beale: Vehicle power transmission arrangements and electronic power controls. U S Philips Corporation, Frank R Trifari, David R Treacy, August 15, 1978: US04107776 (85 worldwide citation)

An electronically controlled transmission arrangement for an internal combustion engine driven vehicle such as a private automobile, permitting operation under normal conditions close to regions of minimum specific fuel consumption while also permitting bringing an engine in poor operating condition ...

Rudiger Pepperl, Johann Kruger, Bernhard Hill: Optical multi-channel digital disc storage system. U S Philips Corporation, Frank R Trifari, Simon L Cohen, June 6, 1978: US04094010 (82 worldwide citation)

An optical storage system for the simultaneous or random storage of digital information in a plurality of channels, comprising a rotating storage disc which is scanned by a light beam. The digital information of each channel is stored in points along a spiral track comprising interruptions. A concen ...

Roger Paul White: Electrophoresis display with buried lead lines. North American Philips Corporation, Frank R Trifari, Norman N Spain, January 17, 1978: US04068927 (78 worldwide citation)

A multisegmented electrophoretic display such as a numerical display in which the lead lines are hidden from the observer's view and prevented from having a switching function by separating the lead lines from the electrophoretic suspension by means of an insulating and a conducting layer.

Maurice Georges Bellanger, Georges Bonnerot, Michel Coudreuse: Arrangement for processing auxiliary signals in a frequency multiplex transmission system. Telecommunications Radioelectriques et Telephoniques T R T, Frank R Trifari, Henry I Steckler, July 18, 1978: US04101738 (77 worldwide citation)

A circuit for converting into an FDM format spatially separated signalling signals and pilot signals, comprises a digital filter bank for converting the signals into the FDM format. A receiver for separating the signalling signals and pilot signals from the FDM signal comprises another digital filte ...

Jean Robert Perilhou: Device for ultrasonic scanning. U S Philips Corporation, Frank R Trifari, Ronald L Drumheller, November 23, 1976: US03992925 (77 worldwide citation)

An ultrasonic examination device comprising two curved converging mirrors, the points of focus of which differ and are separated from each other over a distance equalling the width of the image plane. The device furthermore comprises two pairs of mosaics, formed by transducers, which are mounted bac ...

Wolfgang Wagner: Device for measuring local radiation absorption in a body. U S Philips Corporation, Frank R Trifari, November 8, 1977: US04057725 (77 worldwide citation)

A device for measuring the spatial distribution of radiation absorption in a body wherein a multiplicity of radiators are regularly distributed about a circle surrounding the body, each radiator emitting a wedge-shaped beam of radiation in the plane of the circle toward a different arc portion of th ...