ClassID:

119502

C22B34/365 - CPC Classification

Classification description:

Obtaining refractory metals; Obtaining chromium, molybdenum or tungsten; Obtaining tungsten from spent catalysts

Recent Application in this class:
#1
20230193420
2023-06-22

Process for oxidative cleavage of vegetable oils containing monosaturated fatty acid triglycerides

#2
20210130928
2021-05-06

Method for selective recovery of valuable metal from waste denitrification catalyst through alkali fusion

#3
20200010923
2020-01-09

Process for the recovery of cobalt and tungstic acid and/or its derivatives from aqueous solutions

#4
20180163283
2018-06-14

Tungsten and vanadium separation

#5
20170321299
2017-11-09

Process for the recovery of cobalt and tungstic acid and/or its derivatives from aqueous solutions

#6
20170073795
2017-03-16

Method for leaching precious metals contained in waste denitrification catalyst using pressure leaching process

#7
20170050183
2017-02-23

Methods for reprocessing used catalysts

#8
20160376682
2016-12-29

Method for recovering vanadium and tungsten from leach solution of waste denitrification catalyst

#9
20150203938
2015-07-23

Method for leaching valuable metals contained in waste denitrification catalyst by using roasting and water leaching

#10
20130283975
2013-10-31

Method of separating and recovering metal elements

#11
20130064742
2013-03-14

PROCESS FOR THE EXTRACTION OF SPECIFIC TRANSITION METALS

#12
20100210448
2010-08-19

CATALYST RECOVERY PROCESS

#13
20100098606
2010-04-22

Process for the extraction of specific transition metals

#14
20090047198
2009-02-19

Process for the extraction of specific transition metals with gaseous HCL

#15
20080131343
2008-06-05

Process for recovering group VIB metals from a catalyst