| Patents for G01F 5 - Measuring a proportion of the volume flow (1,398) |
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| 01/24/1991 | WO1991000987A1 Air-flow meter |
| 01/22/1991 | US4986116 Air flow meter for internal combustion engine |
| 01/22/1991 | US4986115 Internal combustion engine |
| 01/08/1991 | US4982602 Internal combustion engine |
| 01/01/1991 | US4981035 Internal combustion engine |
| 12/11/1990 | US4976140 Intake air flow rate measuring apparatus for use in internal combustion engine |
| 12/04/1990 | US4974445 Hot wire type of air flow meter and internal combustion engine using the same |
| 12/04/1990 | CA1277193C Throttle body with internally mounted anemometer |
| 11/22/1990 | EP0398708A1 Flowmeter |
| 10/09/1990 | US4961344 Gas flow measuring apparatus |
| 10/02/1990 | US4959990 Combined mass flow/pitot tube meter |
| 09/12/1990 | EP0386966A2 A hot-wire air flow meter and internal combustion engine provided with the same |
| 09/11/1990 | US4955230 Elimination of turbulence for silicon micromachined airflow sensor |
| 08/22/1990 | EP0382819A1 Mass-volume flowmeter |
| 08/21/1990 | US4949578 Flow metering of high temperature gases |
| 07/24/1990 | US4942763 Flow sensor assembly |
| 07/17/1990 | US4941361 Three-in-one flowmeter |
| 07/03/1990 | US4938053 Fluid metering system |
| 06/19/1990 | US4934178 Method and apparatus for determining the density of a gas |
| 05/23/1990 | EP0369592A2 Sampling probe flow sensor |
| 05/17/1990 | WO1990005291A1 Process and device for withdrawing liquid samples from a flow line |
| 05/16/1990 | EP0367899A1 Method and apparatus for extracting liquid-samples from a liquid-flow pipe |
| 05/09/1990 | EP0367111A2 Apparatus for measuring the intake air-flow rate of internal combustions engines |
| 05/08/1990 | US4922879 Intake arrangement for internal combustion engine |
| 05/01/1990 | US4921005 Mass flow controller |
| 04/10/1990 | US4914947 Sampling probe flow sensor |
| 04/03/1990 | US4912973 Multiple point velocity probe |
| 03/27/1990 | US4911007 For measuring fluid flow through a pipeline |
| 03/06/1990 | US4905509 Hot wire air flow meter arrangement for monitoring intake air flow rate in internal combustion engine |
| 02/14/1990 | EP0354649A2 Close-coupled mass airflow meter and throttle plate assembly |
| 02/08/1990 | DE3837598A1 Method and device for obtaining milk samples from a flow conduit |
| 01/30/1990 | US4896541 Vortex generating mass flowmeter |
| 12/28/1989 | WO1989012802A1 Mass-volume flowmeter |
| 12/19/1989 | US4887577 Hot-wire type air flow meter and an internal combustion engine with the same |
| 12/05/1989 | US4884441 Variable capacity flowmeter |
| 11/14/1989 | US4879898 Apparatus for shielding and protecting an air flow rate meter disposed in the intake tube of an internal combustion engine from air column fluctuations |
| 10/24/1989 | US4875932 Apparatus for measuring a flow rate |
| 10/03/1989 | US4870859 Flowmeter controller for an air inleakage monitoring system |
| 10/03/1989 | US4870857 Throttle body with internally mounted anemometer |
| 08/30/1989 | EP0330233A1 Hot wire air flow meter arrangement for monitoring intake air flow rate in internal combustion engine |
| 08/22/1989 | US4859151 Pump-off control for a pumpjack unit |
| 08/22/1989 | US4858647 Attitude-insensitive, by-pass sensor |
| 08/02/1989 | EP0326510A2 Method and apparatus for applying single or multicomponent materials |
| 07/19/1989 | CN2041422U Uniform speed tube shunting type water meter |
| 07/18/1989 | CA1257486A1 Flow sensor with adjustable sensitivity |
| 07/06/1989 | DE3821690A1 Device for the measurement of small pressure differences |
| 07/05/1989 | EP0322459A1 Hot wire type air flow meter |
| 06/28/1989 | EP0322264A1 Apparatus for extracting a sample and measuring the flow of a liquid in a constant or pulsed circulation |
| 06/08/1989 | DE3740531A1 Compound water meter with a partial-flow meter as main meter |
| 05/31/1989 | EP0318241A2 Measuring the flow of a packed bed of particles |
| 05/23/1989 | US4832499 Apparatus for feeding and metering fluid components to a high pressure mixing head |
| 05/23/1989 | US4831875 Water trap valve for fail safe operation of an air inleakage monitoring system in a steam turbine |
| 05/02/1989 | US4825706 Flowmeter for a moving packed bed |
| 05/02/1989 | US4825704 Fluid flow speed measuring apparatus |
| 04/26/1989 | EP0313089A2 Hot wire type of air flow meter and internal combustion engine using the same |
| 04/25/1989 | US4823992 Metering device for feeding liquids to a mixing head |
| 03/08/1989 | EP0306193A1 Fluid meter |
| 03/01/1989 | EP0305134A1 Fluid metering system |
| 01/31/1989 | US4800754 Wide-range, adjustable flowmeter |
| 01/31/1989 | US4800752 Use within a well bore |
| 01/31/1989 | CA1249453A1 Air flow meter |
| 01/04/1989 | EP0297962A1 Flow restricting logging tool and method |
| 12/29/1988 | WO1988010411A1 Hot wire type air flow meter |
| 12/21/1988 | EP0295845A1 Fluidic oscillator |
| 12/21/1988 | EP0295647A1 Hot-wire type air flow meter. |
| 12/13/1988 | US4790178 Intake structure of internal combustion engine with bypass intake passage for mounting air flow meter |
| 11/16/1988 | CN88102494A Air inleakage monitoring system |
| 10/11/1988 | US4776213 Mass airflow meter |
| 08/23/1988 | CA1240852A1 Device for sampling and measuring the flow of a liquid under constant or pulsed circulation conditions |
| 05/05/1988 | DE3636930A1 Method and device for sensing the through-flows of fluids |
| 05/04/1988 | CN87203379U Musical lighting cup |
| 04/26/1988 | US4739651 Throttle body with internally mounted anemometer |
| 03/23/1988 | CN85100330B Flow counter of the dynamic pressure partial flow type |
| 03/09/1988 | EP0258688A2 Metering device for feeding liquids to a mixing head |
| 02/16/1988 | CA1232779A1 Air flow sensor |
| 02/09/1988 | US4723443 Intake air flow sensor |
| 02/03/1988 | EP0255056A2 Method for measuring the speed of a gas flow |
| 02/03/1988 | EP0255054A2 Anemometer sensor mounting assembly |
| 12/05/1987 | CN86207470U Tube flow meter with a flow deviding device |
| 12/01/1987 | US4709581 In an internal combustion engine |
| 08/19/1987 | EP0232710A1 Flow rate detector |
| 07/07/1987 | US4677850 Semiconductor-type flow rate detecting apparatus |
| 07/07/1987 | CA1223753A2 Apparatus for measuring human respiration |
| 06/16/1987 | EP0225604A2 An apparatus for feeding and metering fluid components to a high pressure mixing head |
| 06/11/1987 | DE3543169A1 Hydrants incorporated in pipeline systems |
| 04/29/1987 | EP0064975B1 Vortex generating mass flowmeter |
| 04/15/1987 | EP0218216A1 Intake air flow sensor |
| 03/18/1987 | CN85106537A Airflow meter |
| 03/10/1987 | US4648270 Mass flowmeter |
| 01/17/1987 | CN85100330A Flow counter of the dynamic pressure partial flow type |
| 11/25/1986 | US4624134 Hot-wire air-flow meter |
| 09/02/1986 | US4608864 Device for sampling and measuring the flow rate of a continuously or intermittently circulating liquid |
| 08/19/1986 | CA1293870E Apparatus for Measuring Human Respiration |
| 08/19/1986 | CA1209821A1 Apparatus for measuring human respiration |
| 07/29/1986 | US4602514 Device for measuring the volume flow of a gas in a duct |
| 07/02/1986 | CA1206773A Laminar-flow channeling in thermal flowmeters and the like |
| 05/28/1986 | CN85203009U Model ysf-1 digital vane anemometer |
| 04/15/1986 | US4581984 Apparatus for measuring human respiration |
| 04/02/1986 | EP0176051A1 Flow sensor |
| 03/26/1986 | EP0175077A1 Air flow sensor |