| 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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| 07/12/1977 | US4034610 Differential pressure measuring device |
| 07/05/1977 | US4033787 Fabrication of semiconductor devices utilizing ion implantation |
| 06/21/1977 | US4030366 Pressure transmitter |
| 06/14/1977 | US4029979 Fluidic to electric transducer and method |
| 06/07/1977 | US4027661 Pressure sensor |
| 06/07/1977 | US4027536 Transducer for engine fuel injection monitoring |
| 05/31/1977 | US4027143 Encoding altimeter |
| 05/31/1977 | US4026276 Intracranial pressure monitor |
| 05/24/1977 | US4025942 Low pressure transducers employing large silicon diaphragms having non-critical electrical properties |
| 05/24/1977 | US4025912 Method and apparatus for remotely transducing and transmitting pressure and temperature changes |
| 05/17/1977 | US4023562 Miniature pressure transducer for medical use and assembly method |
| 05/17/1977 | US4023415 Pressure monitoring device |
| 05/03/1977 | US4021766 Solid state pressure transducer of the leaf spring type and batch method of making same |
| 04/26/1977 | US4020448 Oscillating crystal transducer systems |
| 04/26/1977 | US4019388 Glass to metal seal |
| 04/19/1977 | US4019072 Piezoelectric pressure sensor |
| 04/12/1977 | US4017819 Pressure transducer |
| 04/12/1977 | US4016764 Temperature compensated, high resolution pressure transducer based on capacitance change principles |
| 04/12/1977 | US4016763 Two wire current transmitter responsive to a resistive temperature sensor input signal |
| 04/05/1977 | US4015477 Linear displacement transducer |
| 03/22/1977 | US4012959 Pressure gauge and flow meter |
| 03/15/1977 | US4011758 Magnetostrictive pressure transducer |
| 02/22/1977 | US4009447 Amplifier arrangement with zeroing device for piezoelectric transducers |
| 02/22/1977 | US4008619 Vacuum monitoring |
| 02/22/1977 | US4008618 Flight instrument |
| 02/08/1977 | US4006641 Method and apparatus for sensing and measuring fluid pressure |
| 02/08/1977 | US4006640 Seal for process pressure to current transmitter |
| 02/08/1977 | US4006638 Altimeter-encoder |
| 02/08/1977 | US4006628 Magnetic induction type transducer means |
| 02/01/1977 | US4006402 Device for remote transmitting pressure signals |
| 01/25/1977 | US4005354 Electromagnetic position transducers |
| 01/18/1977 | US4003127 Vapor deposition, etching; pressure sensitive elements |
| 01/04/1977 | US4001813 Precision capacitance to digital conversion system |
| 12/07/1976 | US3995493 Differential pressure transducer |
| 11/23/1976 | US3993939 Pressure variable capacitor |
| 11/23/1976 | US3992945 Bourdon pressure gauge having direct-coupled electronic and visual readout |
| 11/09/1976 | US3990310 Closed pressure rebalance system for measuring the rate of fluid flow |
| 09/21/1976 | US3982219 Range transducer |
| 09/21/1976 | US3981199 Pressure transducer |
| 09/21/1976 | US3981198 Transducing methods and transducers |
| 09/21/1976 | US3981197 External blood pressure transducer |
| 09/07/1976 | US3978731 Surface acoustic wave transducer |
| 08/31/1976 | US3978508 Pressure sensitive field effect device |
| 08/31/1976 | US3977391 Pressure sensor apparatus |
| 08/31/1976 | US3977245 Down hole apparatus for sensing and storing values of physical parameters |
| 08/17/1976 | US3975719 Transducer for converting a varying reactance signal to a DC current signal |
| 07/20/1976 | US3970862 Polymeric sensor of vibration and dynamic pressure |
| 07/13/1976 | US3969662 Measuring the angular position of a shaft |
| 07/13/1976 | US3969187 Detection of fuel rod leakage |
| 07/13/1976 | US3968694 Gauge for remotely indicating the pressure of a subterranean formation |
| 07/13/1976 | US3968693 Open-loop differential-pressure transmitter |
| 07/13/1976 | US3968691 Environmental condition sensing apparatus |
| 07/06/1976 | US3968466 Pressure transducer |
| 07/06/1976 | US3967504 Differential pressure transmitter with low side overrange protection |
| 06/29/1976 | US3967188 Temperature compensation circuit for sensor of physical variables such as temperature and pressure |
| 06/29/1976 | US3965746 Pressure transducer |
| 06/29/1976 | US3965745 Externally mounted transducer for detecting changes of fluid pressure in a pipe |
| 06/22/1976 | US3964319 Instrumentation for measuring aircraft noise and sonic boom |
| 06/15/1976 | US3963891 Choked condition detector for an air-purifying device |
| 06/15/1976 | US3962921 Compensated pressure transducer |
| 06/15/1976 | US3962911 Method and apparatus for coupling signals from a rotating device with end shafts exposed |
| 06/01/1976 | US3961297 Electromagnetic anisotropic devices |
| 06/01/1976 | US3961272 Encoding altimeter |
| 06/01/1976 | US3960018 Conformal pressure transducer |
| 05/25/1976 | US3958459 Barometric altimeter |
| 05/18/1976 | US3958239 Capacitive transistorized signaling device |
| 05/18/1976 | US3956938 Pressure sensors utilizing ferromagnetic fluids |
| 05/18/1976 | US3956927 Strain gauge transducer apparatus |
| 05/18/1976 | US3956920 Dual function pressure transducer |
| 05/04/1976 | US3955164 Electromagnetic force applying device |
| 05/04/1976 | US3955070 Apparatus for measuring variable quantities |
| 04/27/1976 | US3952595 Temperature correcting circuit |
| 04/20/1976 | US3952234 Pressure transducers |
| 04/20/1976 | US3951707 Method for fabricating glass-backed transducers and glass-backed structures |
| 04/20/1976 | US3950996 Fluid pressure transducer |
| 04/06/1976 | US3948102 Trielectrode capacitive pressure transducer |
| 03/30/1976 | US3947692 Digital transducers |
| 03/30/1976 | US3946724 Device for measuring pressure |
| 03/30/1976 | US3946615 Pressure transducer |
| 03/16/1976 | US3943915 Intracranial pressure sensing device |
| 03/16/1976 | US3943769 Electric conductive laminated vessel wall |
| 03/09/1976 | US3942382 Pressure transducer |
| 03/02/1976 | US3942049 Piezoelectric pick-up device for measuring pressures within hollow bodies |
| 03/02/1976 | US3942002 Signal combining circuits |
| 03/02/1976 | US3941629 Semiconductor pressure transducers |
| 03/02/1976 | US3940992 Transducer |
| 03/02/1976 | US3940980 Oil well pressure sensing system |
| 02/24/1976 | US3939823 Esophageal transducer |
| 02/10/1976 | US3938175 Polycrystalline silicon pressure transducer |
| 02/10/1976 | US3937087 Transducer for engine fuel injection monitoring |
| 02/03/1976 | US3935745 Pore water pressure measuring device |
| 02/03/1976 | US3935636 Method of making a pressure transducer |
| 02/03/1976 | US3935634 Methods of fabricating integrated transducer assemblies |
| 01/13/1976 | US3931739 Negative pressure detector |
| 01/06/1976 | US3930823 High temperature transducers and housing including fabrication methods |
| 01/06/1976 | US3930412 Electrically scanned pressure transducer configurations |