ClassID:

170131

G01N2291/0217 - CPC Classification

Classification description:

Indexing codes associated with group; Indexing codes associated with the analysed material; Gases Smoke, combustion gases

Recent Application in this class:
#1
20250067667
2025-02-27

SMOKE DETECTOR REDUCING FALSE ALARM RATE

#2
20240102970
2024-03-28

METHOD FOR DETERMINING A PROPERTY OF A SAMPLE FLUID OR A RESONANT FREQUENCY OF A RESONATOR CELL

#3
20230408455
2023-12-21

Photoacoustic detection system with differential amplifier for determing target species presence and triggering fault

#4
20230060584
2023-03-02

Optical machine of smoke detector

#5
20210231619
2021-07-29

Photoacoustic detection system with clocked tuning fork positions

#6
20200040787
2020-02-06

Method and device for monitoring the tank content of a storage tank of an exhaust-gas treatment system

#7
20180073971
2018-03-15

Particulate matter sensor

#8
20170301226
2017-10-19

Fire detector test device and methods therefor

#9
20160320349
2016-11-03

Method of calibrating a concentration sensor

#10
20150128722
2015-05-14

Sensing apparatus and method

#11
20150068294
2015-03-12

Flame monitoring of a gas turbine combustor using multiple dynamic pressure sensors in multiple combustors

#12
20150027211
2015-01-29

Flame monitoring of a gas turbine combustor using a characteristic spectral pattern from a dynamic pressure sensor in the combustor

#13
20130199265
2013-08-08

Gas concentration sensor, motor vehicle having a gas concentration sensor, and method for measuring gas concentration

#14
20130013227
2013-01-10

Sensing apparatus and method

#15
20100259396
2010-10-14

Fire alarm system

#16
20100103425
2010-04-29

Photoacoustic detector for measuring fine dust

#17
20090184830
2009-07-23

Smoke sensor of the sound wave type including a smoke density estimation unit

#18
20090071229
2009-03-19

NOx SENSOR AND METHOD FOR DETECTING NOx

#19
20080011053
2008-01-17

Soot sensor and operating method

#20
20070084286
2007-04-19

Sensing apparatus and method

#21
20070076207
2007-04-05

Method for verification of particles having a sensor area and sensor arrangement for carrying out this method

#22
20070041870
2007-02-22

Sensor head, gas sensor and sensor unit

#23
20060144148
2006-07-06

Apparatus and method for measuring a fluid flowing in a pipe using acoustic pressures

#24
20060034726
2006-02-16

Multiple sensing system and device

#25
20060005611
2006-01-12

Ultrasonic measurement of the running time and quantity for detecting the concentration of particles in a flowing fluid

#26
20050229677
2005-10-20

High-temperature gas sensors

#27
20050076704
2005-04-14

Acoustic particulates density sensor

#28
20050061056
2005-03-24

Apparatus, systems and methods for detecting and transmitting sensory data over a computer network

#29
20050000289
2005-01-06

Fluid parameter measurement for industrial sensing applications using acoustic pressures