ClassID:

159248

F25B2309/1423 - CPC Classification

Classification description:

Gas cycle refrigeration machines; Compression machines, plants or systems characterised by the cycle used  Pulse tubes with basic schematic including an inertance tube

Recent Application in this class:
#1
20220325922
2022-10-13

REGENERATIVE CRYOGENIC MACHINE

#2
20190078814
2019-03-14

Pulse tube cryocooler with axially-aligned components

#3
20170045274
2017-02-16

Cryogenic regenerator and cryogenic refrigerator

#4
20160245553
2016-08-25

Multistage pulse tube coolers

#5
20150362221
2015-12-17

Frequency-matched cryocooler scaling for low-cost, minimal disturbance space cooling

#6
20140230457
2014-08-21

Pulse tube refrigerator/cryocooler apparatus

#7
20140069115
2014-03-13

Cryocooler having variable-length inertance channel for tuning resonance of pulse tube

#8
20130247592
2013-09-26

Regenerative refrigerator

#9
20130067936
2013-03-21

Cryogenic refrigerator

#10
20130025841
2013-01-31

Passive phase change cooling device

#11
20120102976
2012-05-03

Pulse tube cryocooler modulating phase via inertance tube and acoustic power amplifier thereof

#12
20110000228
2011-01-06

HYBRID CRYOCOOLER WITH MULTIPLE PASSIVE STAGES

#13
20090107150
2009-04-30

Inertance tube and surge volume for pulse tube refrigerator

#14
20080276625
2008-11-13

Acoustic power transmitting unit for thermoacoustic systems

#15
20080229760
2008-09-25

Multi-stage pulse tube cryocooler with acoustic impedance constructed to reduce transient cool down time and thermal loss

#16
20080173025
2008-07-24

Reduced volume gas spring or surge tank for cryocooler

#17
20080072608
2008-03-27

Control method for pulse tube cryocooler

#18
20080072607
2008-03-27

Densifier for simultaneous conditioning of two cryogenic liquids

#19
20070261416
2007-11-15

Hybrid cryocooler with multiple passive stages

#20
20070095074
2007-05-03

Acoustic cooling device with coldhead and resonant driver separated

#21
20070044484
2007-03-01

Pulse tube cooler having ¼ wavelength resonator tube instead of reservoir

#22
20070000257
2007-01-04

Pulse tube refrigerating machine

#23
20060254286
2006-11-16

Solid state cryocooler

#24
20060156741
2006-07-20

Multi-stage cryocooler with concentric second stage

#25
20050210886
2005-09-29

Methods for operating a pulse tube cryocooler system with mean pressure variations

#26
20050061006
2005-03-24

Biological refrigeration system