ClassID:

159238

F25B2309/1413 - CPC Classification

Classification description:

Gas cycle refrigeration machines; Compression machines, plants or systems characterised by the cycle used  Pulse-tube cycles characterised by performance, geometry or theory

Recent Application in this class:
#1
20240191913
2024-06-13

PULSE TUBE CRYOCOOLER AND METHOD FOR COOLING DOWN PULSE TUBE CRYOCOOLER

#2
20220275978
2022-09-01

Double-ended thermoacoustic heat exchanger

#3
20200263907
2020-08-20

Cryocooler, cryocooler diagnosis device, and cryocooler diagnosis method

#4
20190309994
2019-10-10

Heat station for cooling a circulating cryogen

#5
20180031283
2018-02-01

Pulse-tube refrigerator

#6
20170130702
2017-05-11

System and method for energy conversion

#7
20160245553
2016-08-25

Multistage pulse tube coolers

#8
20150354861
2015-12-10

Stirling-type pulse tube refrigerator

#9
20150233609
2015-08-20

CRYOGENIC REFRIGERATOR

#10
20150192331
2015-07-09

PULSE TUBE REFRIGERATOR

#11
20150108980
2015-04-23

Apparatus for reducing vibrations in a pulse tube refrigerator such as for magnetic resonance imaging systems

#12
20140290276
2014-10-02

U-shaped pulse-tube refrigerator

#13
20140250920
2014-09-11

Pulse tube refrigerator

#14
20140238047
2014-08-28

Cryogenic refrigerator

#15
20130291566
2013-11-07

Pulse tube refrigerator with an automatic gas flow and phase regulating device

#16
20130291565
2013-11-07

Pulse tube refrigerator and regenerative refrigerator

#17
20130111894
2013-05-09

System and method for energy conversion by pressure wave and/or phase-exchange

#18
20120151941
2012-06-21

Secondary pulse tubes and regenerators for coupling to room temperature phase shifters in multistage pulse tube cryocoolers

#19
20110100023
2011-05-05

Variable phase shift devices for pulse tube coolers

#20
20090241556
2009-10-01

Pulse tube refrigerator and regenerative refrigerator

#21
20090173083
2009-07-09

Co-axial multi-stage pulse tube for helium recondensation

#22
20080314050
2008-12-25

NO-VENT LIQUID HYDROGEN STORAGE AND DELIVERY SYSTEM

#23
20080256958
2008-10-23

Pulse tube cryocooler

#24
20080229760
2008-09-25

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

#25
20080173026
2008-07-24

Regenerative cryocooler, cylinder used for the regenerative cryocooler, cryopump, recondensing apparatus, superconducting magnet apparatus, and semiconductor detecting apparatus

#26
20080173025
2008-07-24

Reduced volume gas spring or surge tank for cryocooler

#27
20070095074
2007-05-03

Acoustic cooling device with coldhead and resonant driver separated

#28
20060277925
2006-12-14

Pulse tube refrigerator

#29
20060242968
2006-11-02

Cooling device

#30
20060225434
2006-10-12

Cryocooler assembly with screened regenerator

#31
20060174635
2006-08-10

Multi-stage pulse tube with matched temperature profiles

#32
20060144054
2006-07-06

Co-axial multi-stage pulse tube for helium recondensation

#33
20060097146
2006-05-11

NMR spectrometer with a common refrigerator for cooling an NMR probe head and cryostat

#34
20050198970
2005-09-15

Low frequency pulse tube system with oil-free drive

#35
20050132745
2005-06-23

No-vent liquid hydrogen storage and delivery system

#36
20050022540
2005-02-03

Heat driven acoustic orifice type pulse tube cryocooler