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Class Information
Number: 73/29.02
Name: Measuring and testing > Gas analysis > Moisture content or vapor pressure > Hygrometer
Description: Subject matter wherein the amount of the liquid is the actual amount of water vapor in a unit volume of air (e.g., the absolute humidity) or the ratio of the amount of water vapor in the air to the amount of water vapor which the air would hold if it were saturated at that temperature (e.g., the relative humidity).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7523643 |
Humidity sensing structure having a cantilever resistor and method for fabricating the same |
Apr. 28, 2009 |
| 7509839 |
Cosmetic kit including an indicator or sensor of ambient humidity |
Mar. 31, 2009 |
| 7404312 |
Humidity-sensitive element for humidity sensor |
Jul. 29, 2008 |
| 7393135 |
Moisture detection device |
Jul. 1, 2008 |
| 7380980 |
Detector for detecting state on detection surface |
Jun. 3, 2008 |
| 7350970 |
Dew point measurement method and device for carrying out said method |
Apr. 1, 2008 |
| 7318910 |
Chemical dosimeter |
Jan. 15, 2008 |
| 7181966 |
Physical quantity sensor and method for manufacturing the same |
Feb. 27, 2007 |
| 7181953 |
Moisture detector assembly |
Feb. 27, 2007 |
| 7134318 |
Method of analyzing entrained liquid in a vapor containing fluid |
Nov. 14, 2006 |
| 7077004 |
Method and device for measuring humidity |
Jul. 18, 2006 |
| 7028531 |
Sensor arrangement |
Apr. 18, 2006 |
| 6990847 |
Sensor unit comprising an air humidity sensor and an air temperature sensor |
Jan. 31, 2006 |
| 6976386 |
Tensiometer methods |
Dec. 20, 2005 |
| 6972142 |
Card having multiple layers indicating relative humidity |
Dec. 6, 2005 |
| 6895803 |
Humidity sensor |
May. 24, 2005 |
| 6860143 |
State determining apparatus for humidity sensor |
Mar. 1, 2005 |
| 6796550 |
Humidifier filter servicing and water level indicator |
Sep. 28, 2004 |
| 6772621 |
Tensiometer methods and apparatus |
Aug. 10, 2004 |
| 6568265 |
Humidity sensor and method for making |
May. 27, 2003 |
| 6566893 |
Method and arrangement for monitoring surfaces for the presence of dew |
May. 20, 2003 |
| 6564633 |
Measurement method and system for a humidity or gas concentration sensor |
May. 20, 2003 |
| 6523810 |
Modular performance indicator for a humidifier |
Feb. 25, 2003 |
| 6514721 |
Air sampler for pathogens and psychrometrics |
Feb. 4, 2003 |
| 6499502 |
Method and device for filling a distribution line with corrosive gas |
Dec. 31, 2002 |
| 6327890 |
High precision ultrasonic chilled surface dew point hygrometry |
Dec. 11, 2001 |
| 6250134 |
Apparatus for determining the dew-point and/or the content of vapor in the air |
Jun. 26, 2001 |
| 6237899 |
Humidifier with wick change indicator |
May. 29, 2001 |
| 6073480 |
Humidity sensor with differential thermal detection and method of sensing |
Jun. 13, 2000 |
| 6014890 |
Fast response humidity and temperature sensor device |
Jan. 18, 2000 |
| 5975007 |
Combined whistle and environmental instruments |
Nov. 2, 1999 |
| 5887784 |
Desiccant device and humidity measuring means |
Mar. 30, 1999 |
| 5792938 |
Humidity sensor with differential thermal detection and method of sensing |
Aug. 11, 1998 |
| 5652382 |
Humidity meter |
Jul. 29, 1997 |
| 5581015 |
Devices and methods for measuring temperature and vapor levels in a gas |
Dec. 3, 1996 |
| 5578753 |
Humidity and/or temperature control device |
Nov. 26, 1996 |
| 5557042 |
Impedance detector, in particular for radiosonde operation, as well as a process for the manufacture of a detector |
Sep. 17, 1996 |
| 5540080 |
Wiper assembly for optical surfaces in a chilled mirror hygrometer |
Jul. 30, 1996 |
| 5533393 |
Determination of dew point or absolute humidity |
Jul. 9, 1996 |
| 5531097 |
Absolute humidity meter |
Jul. 2, 1996 |
| 5531096 |
Gas analyzer and method for analyzing a gas |
Jul. 2, 1996 |
| 5520048 |
Automated flow measuring device including wet and dry bulb moisture analyzer |
May. 28, 1996 |
| 5515723 |
Humidity meter |
May. 14, 1996 |
| 5511418 |
Method for measurement of relative humidity, in particular in radiosondes, and humidity detectors that make use of the method |
Apr. 30, 1996 |
| 5507175 |
Cycling chilled mirror dewpoint hygrometer including a sapphire optical mirror |
Apr. 16, 1996 |
| 5485747 |
Method of measurement of relative humidity, in particular in radiosondes, and humidity detectors that make use of the method |
Jan. 23, 1996 |
| 5473933 |
Humidity sensor |
Dec. 12, 1995 |
| 5456104 |
Normalized relative humidity instrument |
Oct. 10, 1995 |
| 5435146 |
Method and apparatus for determining relative humidity |
Jul. 25, 1995 |
| 5431040 |
Method for measuring the humidity of hot air, apparatus for employing this method, and a hot air drying installation including this apparatus |
Jul. 11, 1995 |
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