ClassID:

137698

F01M2013/0044 - CPC Classification

Classification description:

Crankcase ventilating or breathing; Layout of crankcase breathing systems with one or more valves

Recent Application in this class:
#1
20260125996
2026-05-07

BLOW-BY GAS RECIRCULATION DEVICE

#2
20260117686
2026-04-30

Combustion Engine Crankcase Breather System and Method

#3
20260098490
2026-04-09

POLYMERIC VASCULAR GRAFTS WHICH INDUCE NEOVASCULARIZATION WITH MILD TO MINIMAL INFLAMMATION AND PROMOTION OF FIBROVASCULAR TISSUE

#4
20250347236
2025-11-13

ENGINE

#5
20250116215
2025-04-10

BLOW-BY GAS RECIRCULATION DEVICE

#6
20240376838
2024-11-14

PCV VALVE SYSTEM AND METHOD

#7
20230313718
2023-10-05

OIL DECANTATION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE

#8
20220397046
2022-12-15

Oil return valve for a crankcase ventilation system

#9
20220291074
2022-09-15

Leak diagnosis method and leak diagnosis device for blowby gas treatment device of internal combustion engine

#10
20220205375
2022-06-30

Blow-by gas leak diagnostic device

#11
20220195900
2022-06-23

PCV valve system and method

#12
20220178282
2022-06-09

Exhaust valve assembly for a two-stroke internal combustion engine

#13
20210207505
2021-07-08

Breather device and engine

#14
20210189924
2021-06-24

Ventilator-equipped engine

#15
20210115821
2021-04-22

SYSTEM AND APPARATUS FOR A DIAGNOSTIC BREATHER DRYER HAVING A COUPLEABLE EXPANSION PACK

#16
20210003052
2021-01-07

Exhaust valve assembly for a two-stroke internal combustion engine

#17
20200263576
2020-08-20

Internal combustion engine with crankcase ventilation

#18
20200256226
2020-08-13

Combustion engine crankcase breather system and method

#19
20200256225
2020-08-13

Abnormality assessment device of internal combustion engine

#20
20200224602
2020-07-16

Crankcase ventilation system with constant restriction in the flow direction and free flow in an opposite direction

#21
20200224565
2020-07-16

Crankcase ventilation system with a flow control device for on board diagnostics

#22
20200116055
2020-04-16

Blow-by gas purge apparatus for engine

#23
20200102864
2020-04-02

Electric valve device, fresh air passage mechanism, and internal-combustion engine

#24
20200088076
2020-03-19

Oil-separating device

#25
20200063620
2020-02-27

Air cleaner

#26
20200032682
2020-01-30

Crankcase ventilation systems

#27
20190376422
2019-12-12

Engine

#28
20190360372
2019-11-28

Oil and air separator system and method

#29
20190345854
2019-11-14

System and apparatus for a diagnostic breather dryer having a coupleable expansion pack

#30
20190323395
2019-10-24

Filter element, oil separator, and method for controlling prevailing pressure in crankcase ventilation system

#31
20190226369
2019-07-25

Intake manifold drain assembly of an engine

#32
20190226368
2019-07-25

Method and apparatus for checking the plausibility of the functionality of a crankcase ventilation system

#33
20190178123
2019-06-13

Oil and air separator system and method

#34
20190170033
2019-06-06

Device for the ventilation of a crankcase of an internal combustion engine

#35
20190120098
2019-04-25

VALVE, OIL SEPARATOR, AND VENTILATION SYSTEM

#36
20190085996
2019-03-21

Solenoid valve having a structure with less fluid leakage

#37
20190085743
2019-03-21

Throttled PCV system for an engine

#38
20190055865
2019-02-21

Breather device of internal combustion engine

#39
20190032528
2019-01-31

Device and method for venting a crank casing of an internal combustion engine

#40
20190003356
2019-01-03

VALVE SLIDE AND SEPARATOR HAVING A VALVE SLIDE OF SAID TYPE

#41
20180334974
2018-11-22

Method for crankcase ventilation in a boosted engine

#42
20180328259
2018-11-15

Engine

#43
20180252129
2018-09-06

Arrangement and method for controlling a flow of crankcase gases from an internal combustion engine prior to oil separation

#44
20180216509
2018-08-02

DEVICE FOR SEPARATION OF OIL, VENTILATION SYSTEM, CYLINDER HEAD COVER AND INTERNAL COMBUSTION ENGINE

#45
20180216508
2018-08-02

DEVICE FOR SEPARATION OF OIL, VENTILATION SYSTEM, CYLINDER HEAD COVER AND INTERNAL COMBUSTION ENGINE

#46
20180156168
2018-06-07

Blow-by gas recirculation device for internal combustion engine

#47
20180140985
2018-05-24

Methods and apparatuses for missing filter detection and prevention in rotating coalescer designs

#48
20180128135
2018-05-10

PCV ADAPTER FOR CATCH CAN

#49
20180119835
2018-05-03

Unit for the regulation or control of a fluid pressure

#50
20180066572
2018-03-08

Blowby gas treatment device for internal combustion engine with supercharger

#51
20180030937
2018-02-01

Internal combustion engine and method for detecting a leak from a crankcase and/or a tank ventilation system

#52
20180015401
2018-01-18

Device for separating oil from gas in the crankcase of an internal combustion engine

#53
20170350286
2017-12-07

INTEGRATED PCV OIL SEPARATOR AND OIL FILL TUBE

#54
20170241356
2017-08-24

Control device for internal combustion engine and internal combustion engine

#55
20170204755
2017-07-20

Device for the separation of oil droplets and/or oil mist

#56
20170191388
2017-07-06

Lubricating structure for four-stroke engine

#57
20170175662
2017-06-22

Abnormality diagnosis device for blow-by gas returning apparatus

#58
20170058731
2017-03-02

Restrictors using the Venturi effect

#59
20170037752
2017-02-09

Ventilation system for an internal combustion engine

#60
20170037751
2017-02-09

Constant fresh air crankcase ventilation

#61
20170009679
2017-01-12

Method for crankcase ventilation in a boosted engine

#62
20170002704
2017-01-05

Breather device for internal combustion engine

#63
20160363015
2016-12-15

Oil separating module in the crankcase ventilation system of a combustion engine

#64
20160348550
2016-12-01

Filter element, oil separator, and method for controlling prevailing pressure in crankcase ventilation system

#65
20160341154
2016-11-24

Internal combustion engine

#66
20160290194
2016-10-06

Crankcase ventilation system having an oil jet pump with an integrated check valve

#67
20160290193
2016-10-06

Ventilation system for supercharged combustion engines

#68
20160265403
2016-09-15

Controllable oil separation device

#69
20160245137
2016-08-25

Oil separator

#70
20160138442
2016-05-19

Crankcase ventilation apparatus

#71
20160024983
2016-01-28

PCV channel disconnect detection device and method

#72
20150247432
2015-09-03

Blowby gas processing device of internal combustion engine

#73
20150226097
2015-08-13

Heating device of a PCV valve

#74
20150167591
2015-06-18

Internal combustion engine

#75
20150096527
2015-04-09

Engine oil pan

#76
20150040878
2015-02-12

Failure detection device for blow-by gas recirculation apparatus of engine

#77
20140109885
2014-04-24

Engine crankcase ventilation filter assembly; components; feature; and methods

#78
20140034031
2014-02-06

Two circuit adjustable PCV valve

#79
20130233290
2013-09-12

Device and method for cleaning crankcase gas

#80
20130032115
2013-02-07

Valve for controlling a gas flow, liquid separator, ventilation system and internal combustion engine comprising such a valve

#81
20110308504
2011-12-22

VENTILATION SYSTEM AND METHOD FOR SUPERCHARGE ENGINE

#82
20110290225
2011-12-01

Separator device for a system for recirculation of the blow-by gases of an internal combustion engine

#83
20110088641
2011-04-21

Engine equipped with breather mechanism

#84
20110036242
2011-02-17

Oil mist separator

#85
20110023850
2011-02-03

Variable open-closed crankcase breather system for blow-by gas

#86
20100319665
2010-12-23

Fuel-air separation structure improvement for engine blow-by of vehicles

#87
20100307466
2010-12-09

Oil mist separator

#88
20100126441
2010-05-27

Crankcase ventilation apparatus of an internal combustion engine

#89
20100122694
2010-05-20

Oil separation apparatus for blow-by gas

#90
20100077972
2010-04-01

Crankcase pressure regulator for an internal combustion engine

#91
20100006076
2010-01-14

Breather System for a Four Stroke Engine

#92
20090183717
2009-07-23

Crankcase venting system

#93
20090100811
2009-04-23

Inertial gas-liquid separator with constrictable and expansible nozzle valve sidewall

#94
20090050121
2009-02-26

Two stage drainage gas-liquid separator

#95
18208525
2024-08-27

Positive pressure air cleaning apparatus for a crankcase ventilation system

#96
18092547
2024-01-09

Crankcase ventilation system architecture

#97
15603636
2020-05-19

Engine