| 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) |
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| 12/04/1979 | US4177496 Capacitive pressure transducer |
| 12/04/1979 | US4176557 Pressure sensor |
| 11/27/1979 | US4175443 Wet-wet differential pressure transducer |
| 11/27/1979 | US4175429 Device for the measurement of forces or pressures |
| 11/27/1979 | CA1066909A1 Variable inductance transducer |
| 11/20/1979 | US4175243 Temperature compensated oscillating crystal force transducer systems |
| 11/20/1979 | US4174638 Pressure pickup for measuring the pressure in the intake manifold of an internal combustion engine |
| 11/20/1979 | US4174637 Pressure monitoring system |
| 11/13/1979 | US4173900 Semiconductor pressure transducer |
| 11/13/1979 | CA1066084A1 Air pressure transducer |
| 11/06/1979 | US4173149 Differential pressure sensing devices |
| 11/06/1979 | US4173148 Semiconductor strain gauge with temperature compensator |
| 11/06/1979 | CA1065642A1 Pressure sensitive transducer |
| 10/30/1979 | US4172387 Pressure responsive apparatus |
| 10/23/1979 | US4171996 Fabrication of a heterogeneous semiconductor structure with composition gradient utilizing a gas phase transfer process |
| 10/18/1979 | WO1979000783A1 Semiconductor pressure sensors having a plurality of pressure-sensitive diaphragms and method of manufacturing the same |
| 10/09/1979 | US4170498 Transducer |
| 10/02/1979 | US4169389 Pressure measuring device |
| 09/25/1979 | US4168630 Semiconductor pressure converter |
| 09/18/1979 | US4168518 Capacitor transducer |
| 09/18/1979 | US4168517 Capacitive pressure transducer |
| 09/11/1979 | US4167122 Pressure sensing cell for force-balance transmitter |
| 09/04/1979 | US4166967 Piezoelectric resonator with acoustic reflectors |
| 09/04/1979 | US4166384 Semiconductor transducer |
| 08/28/1979 | US4166269 Temperature compensated piezoresistive transducer |
| 08/28/1979 | US4165654 High response rate pressure pulse sensing probe with wide temperature range applicability |
| 08/28/1979 | US4165653 Signal ratio indicator |
| 08/28/1979 | US4165652 Vibratable-wire instrument having an improved temperature compensating technique |
| 08/28/1979 | US4165651 Pressure measuring apparatus using vibratable wire |
| 08/21/1979 | US4165402 Chip-removing machining method and apparatus for semiconducting crystals, specifically suited for the production of force and pressure measuring cells |
| 08/08/1979 | EP0003387A1 Improved electromechanical pressure transducer |
| 08/07/1979 | US4163964 Pneumatic or hydraulic pressure sensors with several thresholds of response |
| 08/07/1979 | US4163396 Digital readout pressure sensor |
| 08/07/1979 | US4163395 Pressure transmitter with simplified pressure sensing head |
| 08/07/1979 | US4163387 Aircraft cabin display unit |
| 07/31/1979 | US4163204 Pressure-sensitive resistors |
| 07/24/1979 | US4161887 Media independent differential pressure transducer |
| 07/24/1979 | US4161886 Pressure transducer and method |
| 07/24/1979 | US4161878 Pressure fluctuation flowmeter |
| 07/10/1979 | US4160971 Transponders |
| 07/10/1979 | US4160600 Pressure-responsive apparatus |
| 07/10/1979 | CA1057971A1 Differential pressure cell with diaphragm tension and overpressure protection |
| 07/10/1979 | CA1057969A1 Differential pressure sensor |
| 06/19/1979 | US4158311 Pressure sensing device |
| 06/19/1979 | US4158310 Optical pressure transducer of randomly distributed fiber optics |
| 06/12/1979 | US4158217 Capacitive pressure transducer with improved electrode |
| 06/05/1979 | US4157528 Wellbore pressure transducer |
| 06/05/1979 | US4157032 Electrically isolated strain gage assembly |
| 05/30/1979 | EP0002110A1 Fabrication of capacitive transducers by depositing a uniform glass insulating ring |
| 05/22/1979 | US4156226 Transducer assembly |
| 05/22/1979 | US4155262 Leakage current in prestressed sensor varies as a function of pressure |
| 05/22/1979 | CA1055145A1 Transducer for measuring injection pressures of diesel engines |
| 05/15/1979 | US4154115 Method and device for continuous measuring of gas pressures |
| 05/08/1979 | US4153873 Transducer for converting a varying analog current signal to a binary digital signal |
| 04/24/1979 | US4151578 Capacitive pressure transducer |
| 04/24/1979 | US4151502 Semiconductor transducer |
| 04/24/1979 | US4150578 Apparatus for measuring excess pore water pressure |
| 04/19/1979 | WO1979000194A1 Transducer for converting a varying analog current signal to a binary digital signal |
| 04/17/1979 | US4149423 High-temperature microphone system |
| 04/17/1979 | US4149422 Vibratory-wire pressure sensor |
| 04/17/1979 | CA1052891A1 Circuitry for encoding altimeter |
| 04/10/1979 | US4149133 Variable differential transformer apparatus |
| 04/10/1979 | US4148530 Cut angles for piezoelectric quartz crystal elements |
| 04/03/1979 | CA1051683A1 Diaphragm pressure fluctuation sensor |
| 03/27/1979 | US4146875 Pressure sensing device |
| 03/27/1979 | US4145932 Pressure transducer |
| 03/20/1979 | US4144747 Simultaneously resonated, multi-mode crystal force transducer |
| 03/06/1979 | US4143335 Pressure sensor including a resistor commutator for providing unambiguous atmospheric pressure data |
| 03/06/1979 | US4142420 Method for electrically calibrating the output of pressure transducers |
| 02/27/1979 | US4141348 Pressure sensor apparatus for non-invasively communicating pressure inside a body to the exterior thereof |
| 02/27/1979 | US4141253 Force transducing cantilever beam and pressure transducer incorporating it |
| 02/27/1979 | US4141252 Flush pressure transducers for measuring pressures in a flowing fluid |
| 02/20/1979 | US4141025 Semiconductor structure sensitive to pressure |
| 02/20/1979 | US4140023 Differential pressure transducer |
| 01/23/1979 | US4135408 Differential pressure measuring transducer assembly |
| 01/23/1979 | CA1047169A1 Glass to metal seal |
| 01/16/1979 | US4134304 Air pressure transducer of diffusion type |
| 01/16/1979 | US4134293 Pressure differential indicating apparatus for a hydraulic measuring bridge and its associated measuring piston |
| 01/16/1979 | CA1046582A1 Vacuum monitoring |
| 01/09/1979 | US4134102 Low tire pressure detector |
| 01/09/1979 | US4134063 Apparatus for the time-dependent measurement of physical quantities |
| 01/09/1979 | US4133100 Method of making diaphragm of optimized stress and strain distribution |
| 01/02/1979 | CA1045406A1 Transducer for engine fuel injection monitoring |
| 12/26/1978 | US4131088 Multiple function pressure sensor |
| 12/19/1978 | USRE29867 Pressure sensitive diaphragms with stress null zone oriented bridge patterns |
| 12/19/1978 | US4130013 Apparatus and method for using fuel pressure to trigger an injection timing device |
| 12/12/1978 | US4129242 High fidelity pressure transducer |
| 12/12/1978 | US4129042 Semiconductor transducer packaged assembly |
| 12/05/1978 | US4128006 Packaging of pressure sensor cells |
| 11/28/1978 | US4127840 Single crystal of aluminum oxide |
| 11/21/1978 | US4126801 Moveable seat for crystal in an oscillating crystal transducer systems |
| 11/21/1978 | US4126049 System and method of measuring fluid pressure force |
| 11/14/1978 | US4125820 Stress sensor apparatus |
| 11/14/1978 | US4125027 Gauge for remotely indicating the pressure of a subterranean formation |
| 11/14/1978 | CA1042226A1 Gauge for remotely indicating the pressure of a subterranean formation |
| 11/07/1978 | US4123945 Pressure indicator |
| 10/24/1978 | US4122337 Pressure-electrical signal conversion means |
| 10/24/1978 | US4121334 Application of field-assisted bonding to the mass production of silicon type pressure transducers |
| 10/24/1978 | CA1040883A1 Open-loop differential-pressure transmitter |
| 10/17/1978 | US4120206 Differential pressure sensor capsule with low acceleration sensitivity |