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Class Information
Number: 250/222.2
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Controlled by article, person, or animal > Inanimate article > Particle detection
Description: Subject matter in which the article is a particle.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7361922 |
Differential absorption lidar apparatus having multiplexed light signals with two wavelengths in a predetermined beam size and beam shape |
Apr. 22, 2008 |
| 7276685 |
Optical system with photo catalytic reactor and incident beam splitter |
Oct. 2, 2007 |
| 7265832 |
Optical flow meter for measuring gases and liquids in pipelines |
Sep. 4, 2007 |
| 7234818 |
Dust detection device for air filter and projector utilizing the same |
Jun. 26, 2007 |
| 7211787 |
Particle movement device |
May. 1, 2007 |
| 7127356 |
Sensors and methods for high-sensitivity optical particle counting and sizing |
Oct. 24, 2006 |
| 7115893 |
Chemical agent sensor having a stationary linear fringe interferometer |
Oct. 3, 2006 |
| 7091509 |
Method for determining at least one energetic property of a gas fuel mixture by measuring physical properties of the gas mixture |
Aug. 15, 2006 |
| 7087885 |
Particle size distribution measuring apparatus and method |
Aug. 8, 2006 |
| 7053783 |
Pathogen detector system and method |
May. 30, 2006 |
| 7038189 |
Optoelectronic dust sensor and air conditioning equipment in which such optoelectronic dust sensor is installed |
May. 2, 2006 |
| 7034325 |
Device for measuring gas concentration having dual emitter |
Apr. 25, 2006 |
| 7009169 |
Method for measuring particle size distribution of a population of particles |
Mar. 7, 2006 |
| 6995351 |
Multiple optical vortices for manipulating particles |
Feb. 7, 2006 |
| 6972424 |
High detection rate particle identifier |
Dec. 6, 2005 |
| 6960756 |
Particle size and shape distribution analyzer |
Nov. 1, 2005 |
| 6919556 |
System and method for monitoring and evaluating solid and semi-solid materials |
Jul. 19, 2005 |
| 6867410 |
Apparatus for measuring position of fine particle |
Mar. 15, 2005 |
| 6829044 |
Compact, high-efficiency condensation nucleus counter |
Dec. 7, 2004 |
| 6794671 |
Sensors and methods for high-sensitivity optical particle counting and sizing |
Sep. 21, 2004 |
| 6768545 |
Particle detector |
Jul. 27, 2004 |
| 6737634 |
Use of multiple optical vortices for pumping, mixing and sorting |
May. 18, 2004 |
| 6667473 |
Tablet monitoring system |
Dec. 23, 2003 |
| 6664533 |
Apparatus and method of remote gas trace detection |
Dec. 16, 2003 |
| 6661514 |
Tube blockage monitor |
Dec. 9, 2003 |
| 6627911 |
Method for determining a particle concentration and device for implementing the method |
Sep. 30, 2003 |
| 6624434 |
Apparatus for measurement of particle or droplet velocity |
Sep. 23, 2003 |
| 6600153 |
Dustproof mechanism |
Jul. 29, 2003 |
| 6590200 |
Systems for detecting measuring inclusions |
Jul. 8, 2003 |
| 6583404 |
Photoelectric smoke detecting apparatus |
Jun. 24, 2003 |
| 6529272 |
Techniques for characterizing cloud condensation nuclel |
Mar. 4, 2003 |
| 6525330 |
Method of strip insertion detection |
Feb. 25, 2003 |
| 6525334 |
System and method for detecting erosion caused by particles in a fluid |
Feb. 25, 2003 |
| 6518562 |
Apparatus and method of remote gas trace detection |
Feb. 11, 2003 |
| 6509558 |
Optical sensor for measuring opaqueness of washing or rinsing liquid |
Jan. 21, 2003 |
| 6495832 |
Photoelectric sensing array apparatus and method of using same |
Dec. 17, 2002 |
| 6472677 |
Devices and methods for transmuting materials |
Oct. 29, 2002 |
| 6465767 |
Photomultiplier tube reprocessing |
Oct. 15, 2002 |
| 6456095 |
Generator interior cooling gas monitor and monitor system |
Sep. 24, 2002 |
| 6441365 |
Process and apparatus for elemental analysis with oxygen control |
Aug. 27, 2002 |
| 6437317 |
Method and apparatus for inspecting cigarette heads |
Aug. 20, 2002 |
| 6414754 |
Method and apparatus for suppressing stray light in particle detectors |
Jul. 2, 2002 |
| 6300622 |
Method and device for charged particle ray information storage |
Oct. 9, 2001 |
| 6209589 |
Apparatus and method for distributing beads |
Apr. 3, 2001 |
| 6194735 |
Gas sensor |
Feb. 27, 2001 |
| 6184517 |
Particle analyzer system |
Feb. 6, 2001 |
| 6084524 |
Photoelectric detection switch |
Jul. 4, 2000 |
| 6078040 |
Smoke detecting apparatus with a predetermined direction electric field component |
Jun. 20, 2000 |
| 6024035 |
Seed planting rate maintenance control with rate display |
Feb. 15, 2000 |
| 5998782 |
Water drop detector on transparent substrate |
Dec. 7, 1999 |
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