Patents
Patents for G01L 9 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means (16,396)
05/1985
05/14/1985US4517622 Capacitive pressure transducer signal conditioning circuit
05/14/1985US4516430 Economical transducer apparatus for use in the medical field
05/14/1985CA1187152A1 Pressure responsive switching device particularly pressostat or thermostat
05/08/1985EP0140066A1 Device for detecting forces, tensions or accelerations at machines, apparatuses or the like
05/07/1985US4516148 Semiconductor device having improved lead attachment
05/02/1985EP0139370A1 Piezoresistive transducer
04/1985
04/30/1985US4513623 Transducer housing employing crimped leads
04/30/1985CA1186163A1 Semiconductor pressure transducer
04/23/1985US4513348 Low parasitic capacitance pressure transducer and etch stop method
04/23/1985US4512199 Transducer
04/23/1985US4512198 Surface acoustic wave sensors
04/23/1985CA1185807A1 Silicon diaphragm capacitive pressure transducer
04/16/1985US4511878 Pressure sensor with improved semiconductor diaphragm
04/16/1985US4510671 Dielectrically isolated transducer employing single crystal strain gages
04/16/1985CA1185454A1 Silicon-glass-silicon capacitive pressure transducer
04/16/1985CA1185453A1 Electrostatic bonded, silicon capacitive pressure transducer
04/09/1985US4509370 Pressure-sensitive optrode
04/03/1985EP0136249A2 Three plate, silicon-glass-silicon capacitive pressure transducer
04/03/1985EP0136248A2 Capacitive pressure transducer signal conditioning circuit
04/03/1985EP0136054A2 Magnetic detection of physiopathological parameters
04/03/1985EP0136050A1 Method of bonding crystalline silicon bodies
04/03/1985EP0135653A2 Pressure and/or temperature sensor
04/03/1985EP0094429A4 Apparatus for conveying fluid pressures to a differential pressure transducer.
04/02/1985US4507973 Housing for capacitive pressure sensor
04/02/1985US4507972 Pressure gauge
04/02/1985US4507970 Pressure sensitive element and a sensor comprising such an element
04/02/1985US4507962 Digital barometric altimeter
03/1985
03/26/1985US4507170 Optimized stress and strain distribution diaphragms
03/20/1985EP0134394A2 Measuring transducer with strain gauges
03/12/1985US4503709 Pressure sensor
03/12/1985CA1183956A1 Process variable transmitter having a non-interacting operating range adjustment
03/05/1985US4502335 Fluid pressure transmitter assembly
03/05/1985US4502334 Combined pressure gauge-transmitter
02/1985
02/26/1985US4501051 High accuracy differential pressure capacitive transducer and methods for making same
02/26/1985CA1183012A1 Multiple range capacitive pressure transducer
02/26/1985CA1183011A1 Piezoelectric pressure sensor
02/20/1985EP0056383B1 Sensor
02/19/1985US4500864 Vapor depsition of nickel, silicon, and boron
02/19/1985US4499774 Semiconductor pressure transducer
02/19/1985US4499773 Variable capacitance pressure transducer
02/19/1985US4499762 Water wave monitor
02/12/1985US4499373 Differential pressure sensing apparatus
02/12/1985US4498344 Sensitive element for use in a strain sensor and a sensor comprising such an element
02/12/1985CA1182563A1 Dual head gauger apparatus with automatic adjustment for pressure variation
02/05/1985US4498070 Semi-conductor transducer and method of making the same
01/1985
01/31/1985WO1985000495A1 Integrated electroacoustic transducer
01/31/1985WO1985000425A1 Device for measuring the pressure in a gas medium
01/29/1985US4495821 Magnetostrictive pressure detector
01/29/1985US4495820 Capacitive pressure sensor
01/29/1985US4495818 Cylindrical vibrator type pressure transducer
01/23/1985EP0132222A1 Capacitive displacement-to-frequency transducer, especially a pressure-to-frequency transducer
01/22/1985US4495434 Pressure-sensitive transducer using piezo ceramic material
01/22/1985US4495385 Acoustic microphone
01/22/1985US4494411 Pressure detector comprising a cylindrical cavity resonator having a front surface made as a diaphragm
01/22/1985CA1181256A1 Bridge for reactive detector circuit
01/16/1985EP0131551A2 Differential pressure transmitter for fluids with compensation of static pressure change effects
01/15/1985US4494183 Process variable transmitter having a non-interacting operating range adjustment
01/15/1985US4494106 Pressure monitor
01/15/1985US4493995 Fiber optical measuring device with a frequency sensitive transducer
01/15/1985CA1181132A1 Reactance measurement circuit
01/15/1985CA1180913A1 Capacitance pressure sensor
01/09/1985EP0130705A2 Beam structure for piezoelectric vibrating beam force or pressure sensors
01/09/1985EP0130670A1 Fluid pressure sensing apparatus
01/09/1985EP0130448A2 Process and device for protecting measuring units and other sensitive elements against pollution and corrosion
01/02/1985EP0129779A2 Disposable transducer apparatus for an electromanometry system
01/02/1985EP0129736A1 Sensor having polycrystalline silicon resistors
01/01/1985US4491016 Method and apparatus for measuring the pressure of a fluid
12/1984
12/25/1984US4490800 Dual head gauger apparatus with automatic adjustment for pressure variation
12/25/1984US4490773 Capacitive pressure transducer
12/25/1984US4490606 Transducer apparatus utilizing fiber optics for data transmission
12/19/1984EP0128737A2 Vibrating quartz diaphragm pressure sensor
12/18/1984US4488436 For converting a fluid pressure into electric signals
12/12/1984EP0127776A2 Semiconductor differential pressure transducer
12/11/1984US4487206 Fiber optic pressure sensor with temperature compensation and reference
12/11/1984US4487074 Pressure sensor with a hall element circuit
12/05/1984EP0127476A2 Fibre-optic transducer apparatus
12/05/1984EP0127176A2 Integrated pressure sensor
12/05/1984EP0126989A1 Fluid pressure transmitter
12/05/1984EP0126907A2 Temperature compensated semiconductor-type pressure transducer
12/05/1984EP0126846A2 Inductive sensor
11/1984
11/27/1984US4485323 Monolithic oscillating crystal transducer systems
11/27/1984US4484479 Gas flow metering
11/22/1984WO1984004590A1 Hollow cylindrical body for a measuring transducer used to measure the pressure of a fluid
11/21/1984EP0126033A1 Device for monitoring the pressure of fluid in a duct
11/20/1984US4484173 Pressure transducer device using Hall elements
11/20/1984US4483196 Tubular transducer structures
11/20/1984CA1178078A1 Capacitive pressure sensor
11/08/1984WO1984004386A1 Reactance measurement circuit with enhanced linearity
11/07/1984EP0124308A2 Pressure transducer assembly
11/07/1984EP0124145A2 Fiber-optical pressure sensor
11/06/1984US4481497 Transducer structures employing ceramic substrates and diaphragms
11/06/1984US4480478 Pressure sensor employing semiconductor strain gauge
10/1984
10/30/1984CA1177121A1 Impedance measurement circuit
10/30/1984CA1176868A1 Temperature compensated differential pressure indicating device
10/30/1984CA1176866A1 Pressure ratio measurement system
10/24/1984EP0122555A2 Arrangement for detecting forces
10/23/1984US4479070 Vibrating quartz diaphragm pressure sensor
10/23/1984CA1176744A1 Semiconductor stress sensing apparatus
10/23/1984CA1176485A1 Filter element test method and apparatus
10/16/1984US4476726 Pressure transducers exhibiting linear pressure operation