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Class Information
Number: 73/204.19
Name: Measuring and testing > Volume or rate of flow > Thermal type > Including response characteristic or condition compensation > For temperature
Description: Subject matter in which the effect of ambient temperature is suppressed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7614296 |
Method and device for fluid flow parameters determination |
Nov. 10, 2009 |
| 7614297 |
Multi-vortex flowmeter |
Nov. 10, 2009 |
| 7399118 |
Thermal gas flowmeter comprising a gas quality indicator |
Jul. 15, 2008 |
| 7084778 |
Ammonia flow alarm and method therefor |
Aug. 1, 2006 |
| 7049556 |
Heating device |
May. 23, 2006 |
| 7003418 |
Methods and systems for temperature compensation of physical property sensors |
Feb. 21, 2006 |
| 6935572 |
Temperature differential eliminator |
Aug. 30, 2005 |
| 6820480 |
Device for measuring gas flow-rate particularly for burners |
Nov. 23, 2004 |
| 6626037 |
Thermal flow sensor having improved sensing range |
Sep. 30, 2003 |
| 6520009 |
Air flow rate measuring apparatus |
Feb. 18, 2003 |
| 6422162 |
Method and apparatus for flow control of NH3 |
Jul. 23, 2002 |
| 6369712 |
Response adjustable temperature sensor for transponder |
Apr. 9, 2002 |
| 6230559 |
Thermal type flow measuring instrument and temperature-error correcting apparatus thereof |
May. 15, 2001 |
| 5940784 |
Heat flow meter instruments |
Aug. 17, 1999 |
| 5936156 |
Liquid metering |
Aug. 10, 1999 |
| 5894088 |
Thermal flow meter with less turbulence in fluid flow |
Apr. 13, 1999 |
| 5844135 |
Temperature sensor for measuring a flow medium in a flow conduit of an internal combustion engine |
Dec. 1, 1998 |
| 5804712 |
Oil flow sensor |
Sep. 8, 1998 |
| 5783757 |
Methods and apparatus for measuring a speed of flow of a fluid |
Jul. 21, 1998 |
| 5780736 |
Axial thermal mass flowmeter |
Jul. 14, 1998 |
| 5764539 |
Non-invasive system and method for a fluid flow monitoring system |
Jun. 9, 1998 |
| 5656938 |
Temperature compensation in mass flow sensors employing the hot-wire anemometer principle |
Aug. 12, 1997 |
| 5608168 |
Temperature compensation in a regulated heat conduction vacuum gauge |
Mar. 4, 1997 |
| 5562101 |
Portable spirometer with improved accuracy |
Oct. 8, 1996 |
| 5522261 |
Fluid flow direction and velocity monitor and temperature compensating circuit therefor |
Jun. 4, 1996 |
| 5524084 |
Method and apparatus for improved flow and pressure measurement and control |
Jun. 4, 1996 |
| 5493100 |
Thermistor flow sensor and related method |
Feb. 20, 1996 |
| 5460040 |
Thermosetting flowmeter |
Oct. 24, 1995 |
| 5460039 |
Flow sensor system |
Oct. 24, 1995 |
| 5435180 |
Method and system for measuring air flow rate |
Jul. 25, 1995 |
| 5392646 |
Thermal type of flow rate sensor |
Feb. 28, 1995 |
| 5339687 |
Flowmeter |
Aug. 23, 1994 |
| 5277196 |
Portable spirometer with improved accuracy |
Jan. 11, 1994 |
| 5237868 |
Thermal flow sensor for compensating gradient of flow rate characteristics |
Aug. 24, 1993 |
| 5216918 |
Fluid mass flow detecting |
Jun. 8, 1993 |
| 5201217 |
Control device for an internal combustion engine |
Apr. 13, 1993 |
| 5111692 |
Temperature compensated liquid level and fluid flow sensor |
May. 12, 1992 |
| 5102230 |
Thermal environment sensor with means to estimate the wind velocity |
Apr. 7, 1992 |
| 5100245 |
Sensing refrigerant temperature in a thermostatic expansion valve |
Mar. 31, 1992 |
| 5072614 |
Temperature compensating circuit |
Dec. 17, 1991 |
| 5060511 |
Intake air quantity measuring apparatus |
Oct. 29, 1991 |
| 5038304 |
Calibration of thermal conductivity and specific heat devices |
Aug. 6, 1991 |
| 5035514 |
Thermal probe for measuring thermal properties of a flowing medium |
Jul. 30, 1991 |
| 4987549 |
Temperature compensated flowmeter techniques |
Jan. 22, 1991 |
| 4982605 |
Air flow monitor and temperature compensating circuit therefor |
Jan. 8, 1991 |
| 4976140 |
Intake air flow rate measuring apparatus for use in internal combustion engine |
Dec. 11, 1990 |
| 4969357 |
Compensated thermal flux mass flowmeter |
Nov. 13, 1990 |
| 4968151 |
Temperature measurement for flowing fluids |
Nov. 6, 1990 |
| 4938061 |
Current controlled electronic circuit for a hot wire air flow meter |
Jul. 3, 1990 |
| 4884443 |
Control and detection circuitry for mass airflow sensors |
Dec. 5, 1989 |
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