ClassID:

119501

C22B34/36 - CPC Classification

Classification description:

Obtaining refractory metals; Obtaining chromium, molybdenum or tungsten Obtaining tungsten

Sub-classes:
Recent Application in this class:
#1
20250179609
2025-06-05

LOW TEMPERATURE REDUCTION OF METAL OXIDES

#2
20230295767
2023-09-21

Low temperature reduction of metal oxides

#3
20230265574
2023-08-24

METHOD FOR RECOVERING METALS FROM TUNGSTEN-CONTAINING METALLIC MATERIAL

#4
20230193420
2023-06-22

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

#5
20220364205
2022-11-17

Method for extracting a refractory metal from an ore, a concentrate or a waste product

#6
20220136082
2022-05-05

TUNGSTEN RECOVERY METHOD

#7
20200190627
2020-06-18

Method for decomposing medium-/low-grade scheelite

#8
20200190626
2020-06-18

Method for decomposing mixed wolframite and scheelite ore in alkaline system

#9
20200010923
2020-01-09

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

#10
20180163283
2018-06-14

Tungsten and vanadium separation

#11
20180087166
2018-03-29

Method for recovering at least one valuable containing tungsten

#12
20180080101
2018-03-22

Method for producing tungsten

#13
20180072576
2018-03-15

Method for producing tungsten carbide

#14
20170345608
2017-11-30

Method for preparing pressed scandia-doped dispenser cathodes using microwave sintering

#15
20170321299
2017-11-09

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

#16
20170209933
2017-07-27

Method for recycling waste cemented carbide by molten salt chemistry

#17
20160355907
2016-12-08

Method for crushing hard tungsten carbide scraps

#18
20160024615
2016-01-28

Sodium tungstate production method

#19
20150373788
2015-12-24

Fusion process using an alkali metal metalate

#20
20150329935
2015-11-19

Method for recovering tungsten compound

#21
20150209864
2015-07-30

Method for synthesizing nanowires and nanofoam

#22
20140119998
2014-05-01

Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution

#23
20140112847
2014-04-24

Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution

#24
20140070137
2014-03-13

Method for the preparation of anhydrous hydrogen halides, inorganic substances and/or inorganic hydrides by using as reactants inorganic halides and reducing agents

#25
20130283978
2013-10-31

Composition for collecting metal component

#26
20130195737
2013-08-01

Method for extracting tungsten from scheelite

#27
20130155581
2013-06-20

Retrieval of high value refractory metals from alloys and mixtures

#28
20120305208
2012-12-06

Process for recovering molybdate or tungstate from aqueous solutions

#29
20120251416
2012-10-04

PROCESS FOR RECYCLING OF TUNGSTEN CARBIDE ALLOY

#30
20120251380
2012-10-04

Recycling of tungsten carbides

#31
20120045647
2012-02-23

Tungstic acid powder consisting of spherical tungsten particles and method for producing same

#32
20110300040
2011-12-08

Method for producing sodium tungstate, method for collecting tungsten, apparatus for producing sodium tungstate, and method for producing sodium tungstate aqueous solution

#33
20110192255
2011-08-11

COMPOSITION FOR COLLECTING METAL COMPONENT

#34
20110058997
2011-03-10

Process for chlorinating resources containing recoverable metals

#35
20110048968
2011-03-03

RECYCLING TUNGSTEN CARBIDE

#36
20090274598
2009-11-05

Process for recovering molybdate or tungstate from aqueous solutions

#37
20090255372
2009-10-15

RECYCLING OF SUPERALLOYS WITH THE AID OF AN ALKALI METAL SALT BATH

#38
20080226528
2008-09-18

Fusion process using an alkali metal metalate

#39
20070256931
2007-11-08

Process for the electrochemical decomposition of powders and electrolysis cells suitable therefor

#40
20070224096
2007-09-27

Tungstic acid powder consisting of spherical tungsten particles and method for producing same

#41
20060198773
2006-09-07

Method for Suppressing the Leachability of Certain Metals

#42
20060196585
2006-09-07

Additives for Suppressing Tungsten Leachability