ClassID:

120608

C23F1/34 - CPC Classification

Classification description:

Etching metallic material by chemical means; Etching compositions; Aqueous compositions; Alkaline compositions for etching copper or alloys thereof

Recent Application in this class:
#1
20260098346
2026-04-09

COMPOSITION, METHOD OF TREATING METAL-CONTAINING LAYER BY USING THE SAME, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE BY USING THE SAME

#2
20260005029
2026-01-01

COMPOSITION, METHOD OF TREATING METAL-CONTAINING LAYER BY USING THE SAME, AND METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE BY USING THE SAME

#3
20250290205
2025-09-18

PROCESS FOR ETCHING CIRCUIT BOARD WITH ALKALINE TETRAAMMINECOPPER (II) SULFATE AND APPARATUS THEREFOR

#4
20240376606
2024-11-14

ETCHING COMPOSITIONS

#5
20230243041
2023-08-03

ETCHING COMPOSITIONS

#6
20230220558
2023-07-13

AN AQUEOUS BASIC ETCHING COMPOSITION FOR THE TREATMENT OF SURFACES OF METAL SUBSTRATES

#7
20230140900
2023-05-11

Methods for wet atomic layer etching of copper

#8
20230081036
2023-03-16

Eco-friendly hydrophobic or ultrahydrophobic coating method

#9
20220305553
2022-09-29

Nanotextured metal powders for 3D printing of metals

#10
20220127728
2022-04-28

Etching chelating agent, manufacturing method thereof, and etching solution composition

#11
20220117092
2022-04-14

CONTINUOUS ETCHING SYSTEM

#12
20220002622
2022-01-06

Chemical liquid and method for treating object to be treated

#13
20210332484
2021-10-28

Alkaline cupric chloride etchant for printed circuit board

#14
20200190673
2020-06-18

Ruthenium etching composition and method

#15
20190127856
2019-05-02

Superhydrophobic surface arrangement, article compromising same and method of manufacture thereof

#16
20180097015
2018-04-05

Manufacture method of array substrate and array substrate manufactured by the method

#17
20170341940
2017-11-30

Methods of modifying surfaces of diamond particles, and related diamond particles and earth-boring tools

#18
20170037519
2017-02-09

METHOD OF IMPROVING LIFETIME OF ETCHING LIQUID AND YIELD IN CU-INTERCONNECTION PROCESS AND CU-INTERCONNECTION ETCHING DEVICE

#19
20160340788
2016-11-24

Microetching solution for copper, replenishment solution therefor and method for production of wiring board

#20
20160322236
2016-11-03

Selective metal/metal oxide etch process

#21
20160312162
2016-10-27

Removal composition for selectively removing hard mask and methods thereof

#22
20160254182
2016-09-01

Removal composition for selectively removing hard mask and methods thereof

#23
20160214152
2016-07-28

SUPERHYDROPHOBIC SURFACE ARRANGEMENT, ARTICLE COMPRISING SAME, AND METHOD OF MANUFACTURE THEREOF

#24
20160177456
2016-06-23

Method of improving lifetime of etching liquid and yield in Cu-interconnection process and Cu-interconnection etching device

#25
20160053383
2016-02-25

Etching agent for copper or copper alloy

#26
20150361341
2015-12-17

High-efficiency high-quality and safe alkaline cupric chloride etchant for printed circuit board

#27
20150267306
2015-09-24

Wet etching methods for copper removal and planarization in semiconductor processing

#28
20150115196
2015-04-30

Microetching solution for copper, replenishment solution therefor and method for production of wiring board

#29
20140335411
2014-11-13

ETCHED SILICON STRUCTURES, METHOD OF FORMING ETCHED SILICON STRUCTURES AND USES THEREOF

#30
20140302671
2014-10-09

Selective etching of copper and copper-barrier materials by an aqueous base solution with fluoride addition

#31
20140238953
2014-08-28

Etching agent for copper or copper alloy

#32
20140061158
2014-03-06

Reduced isotropic etchant material consumption and waste generation

#33
20140038260
2014-02-06

Method for processing a surface

#34
20130207030
2013-08-15

Wet etching methods for copper removal and planarization in semiconductor processing

#35
20130115770
2013-05-09

Etching composition, method of forming a metal pattern and method of manufacturing a display substrate

#36
20130105729
2013-05-02

Etching liquid for film of multilayer structure containing copper layer and molybdenum layer

#37
20120255930
2012-10-11

Method for processing a surface

#38
20110315558
2011-12-29

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#39
20110223772
2011-09-15

Fabrication of semiconductor interconnect structure

#40
20110100828
2011-05-05

Method of producing a hydrogen production filter

#41
20110056913
2011-03-10

Reduced isotropic etchant material consumption and waste generation

#42
20100256034
2010-10-07

COPPER CHELATING AGENT, COMPOSITION INCLUDING THE AGENT, AND METHODS OF FORMING AND USING THE AGENT AND COMPOSITION

#43
20100170532
2010-07-08

Method of cleaning firearms and ordnance

#44
20100029088
2010-02-04

Modulated metal removal using localized wet etching

#45
20100015805
2010-01-21

Wet etching methods for copper removal and planarization in semiconductor processing

#46
20090283499
2009-11-19

Fabrication of semiconductor interconnect structure

#47
20080286701
2008-11-20

Method for kinetically controlled etching of copper

#48
20080245771
2008-10-09

Method for processing a surface

#49
20080233423
2008-09-25

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#50
20080230517
2008-09-25

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#51
20080202562
2008-08-28

Method of cleaning firearms and ordnance

#52
20080200361
2008-08-21

AQUEOUS CLEANER WITH LOW METAL ETCH RATE

#53
20080187672
2008-08-07

Method and Composition for Improving Adhesion of Organic Polymer Coatings with Copper Surface

#54
20070175764
2007-08-02

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#55
20070128872
2007-06-07

Polishing composition and polishing method

#56
20070105377
2007-05-10

Fabrication of semiconductor interconnect structure

#57
20070000609
2007-01-04

ETCHING APPARATUS

#58
20060229221
2006-10-12

Aqueous cleaner with low metal etch rate comprising alkanolamine and tetraalkylammonium hydroxide

#59
20060207970
2006-09-21

Printed circuit patterned embedded capacitance layer

#60
20060199394
2006-09-07

Etching solution, method of etching and printed wiring board

#61
20060183056
2006-08-17

Method for isotropic etching of copper

#62
20060180574
2006-08-17

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#63
20060096948
2006-05-11

Thin film support substrate for use in hydrogen production filter and production method of hydrogen production filter

#64
20050266683
2005-12-01

Remover compositions for dual damascene system

#65
20050263743
2005-12-01

Compositions and processes for photoresist stripping and residue removal in wafer level packaging

#66
20050261150
2005-11-24

Reactive fluid systems for removing deposition materials and methods for using same

#67
20050130866
2005-06-16

Dissolution of copper metal in aqueous alkanolamine to form copper containing aqueous solution

#68
20050056616
2005-03-17

Method for isotropic etching of copper

#69
20050049162
2005-03-03

Petroleum-free, ammonia-free cleaner for firearms and ordnance