ClassID:

144084

F04D19/028 - CPC Classification

Classification description:

Axial-flow pumps; Multi-stage pumps Layout of fluid flow through the stages

Recent Application in this class:
#1
20250180040
2025-06-05

BLOWER

#2
20240328434
2024-10-03

Blower

#3
20230332622
2023-10-19

Compressor flowpath

#4
20230160398
2023-05-25

COMPRESSION SYSTEM FOR A GAS TURBINE, HIGH-PRESSURE COMPRESSOR, COMPRESSION SYSTEM COMPRISING A HIGH-PRESSURE COMPRESSOR, LOW-PRESSURE COMPRESSOR, COMPRESSION SYSTEM COMPRISING A LOW-PRESSURE COMPRESSOR, AND GAS TURBINE

#5
20230131276
2023-04-27

Compressor flowpath

#6
20210018004
2021-01-21

Vacuum system with a multi-stage and multi-inlet vacuum pump with a directional element separating pump stages

#7
20200300255
2020-09-24

Fan System with Control Cooling and Method

#8
20200291948
2020-09-17

Compressor and air conditioner

#9
20200240436
2020-07-30

Compressor flowpath

#10
20200116154
2020-04-16

Dual ESP with selectable pumps

#11
20180209427
2018-07-26

LNG PLANT INCLUDING AN AXIAL COMPRESSOR AND A CENTRIFUGAL COMPRESSOR

#12
20180058456
2018-03-01

Fluid flow machine with high performance

#13
20170363108
2017-12-21

Intercooling for an axial compressor with radially outer annulus

#14
20170363107
2017-12-21

Air injection for an axial compressor with radially outer annulus

#15
20170204878
2017-07-20

Controlled convergence compressor flowpath for a gas turbine engine

#16
20170146025
2017-05-25

Method for operating a compressor of a turbomachine comprising providing a plurality of stages in a front compressor area, a rear compressor area, and allowing a swirl in the rear compressor area

#17
20170074271
2017-03-16

Gas turbine compressor stage

#18
20160290342
2016-10-06

Hybrid compressor

#19
20150233383
2015-08-20

PUMP DEVICE

#20
20150211546
2015-07-30

Multistage axial flow compressor

#21
20150128604
2015-05-14

Gas turbine engine flow path geometry

#22
20150030438
2015-01-29

Axial Compressor

#23
20140271107
2014-09-18

Systems and methods for preventing damage to pump diffusers

#24
20130192198
2013-08-01

COMPRESSOR FLOWPATH

#25
20130156578
2013-06-20

Compressor airfoil tip clearance optimization system

#26
20130121807
2013-05-16

Axial compressor for fluid-flow machines

#27
20110014040
2011-01-20

Fluid flow machine with blade row group

#28
20100223903
2010-09-09

Variable pressure ratio compressor

#29
20090232636
2009-09-17

Multistage compressor for a gas turbine, comprising discharge ports and injection ports to stabilize the compressor flow

#30
20050265825
2005-12-01

Spacing arrangement