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Class Information
Number: 340/629
Name: Communications: electrical > Condition responsive indicating system > Specific condition > Fluent material > Particle suspension in fluid > Smoke > Ionization
Description: Subject matter wherein the smoke detector responds to ionization of the smoke caused by an applied electric field or a radioactive source.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7619538 |
Programmable, directing evacuation systems: apparatus and method |
Nov. 17, 2009 |
| 7605687 |
Ambient condition detector with variable pitch alarm |
Oct. 20, 2009 |
| 7548157 |
Battery backed service indicator aids for field maintenance |
Jun. 16, 2009 |
| 7493816 |
Smoke detectors |
Feb. 24, 2009 |
| 7482940 |
Alarm for detecting radiation and pollutants |
Jan. 27, 2009 |
| 7474227 |
Multiwavelength smoke detector using white light LED |
Jan. 6, 2009 |
| 7443307 |
Christmas tree ornament hazard detector |
Oct. 28, 2008 |
| 7405672 |
Air treatment device having a sensor |
Jul. 29, 2008 |
| 7378976 |
Night light and alarm detector |
May. 27, 2008 |
| 7369057 |
Power generator and power generator auxiliary monitoring |
May. 6, 2008 |
| 7335885 |
Ultra low power NDIR gas sensor fire detector |
Feb. 26, 2008 |
| 7312714 |
Ambient condition detector with time delayed function |
Dec. 25, 2007 |
| 7295128 |
Smoke detection methods, devices, and systems |
Nov. 13, 2007 |
| 7287738 |
Remotely attachable and separable coupling |
Oct. 30, 2007 |
| 7283057 |
Fire alarm spreading system and method |
Oct. 16, 2007 |
| 7262705 |
Recessed detector assembly for detecting and venting airborne substances |
Aug. 28, 2007 |
| 7259665 |
Battery backed service indicator aids for field maintenance |
Aug. 21, 2007 |
| 7233253 |
Multiwavelength smoke detector using white light LED |
Jun. 19, 2007 |
| 7196631 |
Method of utilizing existing fire alarm systems and existing smoke detectors to detect aerolized radioactive material |
Mar. 27, 2007 |
| 7186979 |
Passive NDIR carbon dioxide sensor fire detector |
Mar. 6, 2007 |
| 7176460 |
Passive NDIR gas sensor fire detector |
Feb. 13, 2007 |
| 7167098 |
Testing equipment for a fire alarm |
Jan. 23, 2007 |
| 7154402 |
Power strip with smoke detection auto-shutoff |
Dec. 26, 2006 |
| 7095329 |
Radiation monitor for ease of use |
Aug. 22, 2006 |
| 7057517 |
Alarm network |
Jun. 6, 2006 |
| 7049824 |
Differential particulate detection system for electronic devices |
May. 23, 2006 |
| 7034701 |
Identification of fire signatures for shipboard multi-criteria fire detection systems |
Apr. 25, 2006 |
| 7034703 |
Ambient condition detector with time delayed function |
Apr. 25, 2006 |
| 7030766 |
Ambient condition detector with multi-function test |
Apr. 18, 2006 |
| 6998991 |
Dual carbon monoxide sensor system with control catalyst: new CO and humidity method and apparatus |
Feb. 14, 2006 |
| 6975237 |
System, controller and method of detecting a hazardous condition within an enclosure having a ventilation system |
Dec. 13, 2005 |
| 6940402 |
Method and apparatus for detection of a location of an event |
Sep. 6, 2005 |
| 6914533 |
System and method for accessing residential monitoring devices |
Jul. 5, 2005 |
| 6914535 |
Light scattering type smoke sensor |
Jul. 5, 2005 |
| 6888467 |
Gas detection instrument and method for its operation |
May. 3, 2005 |
| 6828913 |
Scattered light smoke alarm |
Dec. 7, 2004 |
| 6788208 |
Method for controlling stationary fire-extinguishing systems |
Sep. 7, 2004 |
| 6774801 |
Clock and ambient air condition sensing apparatus |
Aug. 10, 2004 |
| 6753786 |
Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature |
Jun. 22, 2004 |
| 6737977 |
Fire detector unit |
May. 18, 2004 |
| 6696967 |
Ambient condition alarm for connecting to a light fixture |
Feb. 24, 2004 |
| 6642849 |
Hush disable feature for photoelectric smoke alarm |
Nov. 4, 2003 |
| 6545608 |
Smoking rules enforcement apparatus |
Apr. 8, 2003 |
| 6522254 |
Smoke detector, and insect screen |
Feb. 18, 2003 |
| 6512460 |
Christmas ornament |
Jan. 28, 2003 |
| 6509838 |
Constant current flame ionization circuit |
Jan. 21, 2003 |
| 6437698 |
Smoke alarm device |
Aug. 20, 2002 |
| 6426703 |
Carbon monoxide and smoke detection apparatus |
Jul. 30, 2002 |
| 6407671 |
Detection system for an electronic enclosure |
Jun. 18, 2002 |
| 6384732 |
Christmas tree smoke detector |
May. 7, 2002 |
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