C01B23/001 - CPC Classification Index

ClassID:

84770 ⎘

C01B23/001 - CPC Classification

Classification description:

Noble gases; Compounds thereof Purification or separation processes of noble gases

Sub-classes:

C01B23/0015 » {Chemical processing only} 4
C01B23/0036 » {Physical processing only} 22
C01B23/0094 » {Combined chemical and physical processing} 23

Recent Application in this class:

20180354795

2018-12-13

Neon recovering/purifying system and neon recovering/purifying method

20160325996

2016-11-10

Method for recovering and purifying argon gas from silicon single crystal manufacturing apparatus and apparatus for recovering and purifying argon gas

20090188278

2009-07-30

Method for purifying and separating a krypton-xenon mixture by rectification and a device for carrying out said method

20090185969

2009-07-23

HELIUM RECOVERY FROM SEMICONDUCTOR CLUSTER TOOLS

20090013718

2009-01-15

METHOD FOR THE SIMULTANEOUS RECOVERY OF A PURE HELIUM AND PURE NITROGEN FRACTION

20050109419

2005-05-26

Gas supplying method and system