ClassID:

119935

C23C8/42 - CPC Classification

Classification description:

Solid state diffusion of only non-metal elements into metallic material surfaces ; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using liquids, e.g. salt baths, liquid suspensions only one element being applied

Sub-classes:
Recent Application in this class:
#1
20250343042
2025-11-06

DIFFUSING AGENT COMPOSITION, AND METHOD FOR MANUFACTURING SEMICONDUCTOR SUBSTRATE

#2
20230049815
2023-02-16

METHODS AND COMPOSITIONS FOR FORMING MAGNETITE COATINGS ON FERROUS METALS

#3
20220170145
2022-06-02

TREATMENT METHOD FOR ZIRCONIUM ALLOY AND APPLICATION

#4
20200071812
2020-03-05

Process for producing nanostructured metal substrates for use in Surface Enhanced Raman Spectroscopy or similar applications

#5
20190376188
2019-12-12

Corrosion and mar resistance of steel components

#6
20190330734
2019-10-31

METHOD OF COATING HEAT TRANSFER COMPONENTS TO IMPART SUPERHYDROPHOBICITY

#7
20190304710
2019-10-03

STRUCTURE FOR ELECTRIC ENERGY STORAGE USING CARBON NANOTUBES

#8
20190186036
2019-06-20

Anti-coking nanomaterial based on stainless steel surface, and preparation method therefor

#9
20190040513
2019-02-07

Method for producing press-hardened components consisting of steel sheets or steel strips comprising an aluminium-based coating, and pressed-hardened component therefrom

#10
20190024244
2019-01-24

Preparation method of dual layered coatings on magnesium alloys with fluorine/polycaprolactone for biomedical applications

#11
20180223412
2018-08-09

Roughened copper foil, copper clad laminate, and printed circuit board

#12
20180218847
2018-08-02

Structure for electric energy storage using carbon nanotubes

#13
20180202052
2018-07-19

Scale conditioning process for advanced high strength carbon steel alloys

#14
20170216881
2017-08-03

COATED STEEL SHEET AND EXTERIOR BUILDING MATERIAL

#15
20170081964
2017-03-23

Treatment process, oxide-forming treatment composition, and treated component

#16
20170009330
2017-01-12

TRIVALENT CHROMIUM-CONTAINING COMPOSITION FOR USE IN CORROSION RESISTANT COATINGS ON METAL SURFACES

#17
20160213501
2016-07-28

Magnesium alloy implants with controlled degradation

#18
20150321254
2015-11-12

Method for producing ultrafine tungsten powder

#19
20150225834
2015-08-13

Boronizing composition and method for surface treatment of steels

#20
20150090368
2015-04-02

Blackening treatment solution for black Cr—Co alloy plating film

#21
20140290802
2014-10-02

Surface treatment method and coating method for steel material, and method for producing machine component

#22
20140287253
2014-09-25

Slide member and method of manufacturing slide member

#23
20140251504
2014-09-11

PASSIVATION OF HOLLOW COPPER STRANDS IN A STATOR WATER COOLING SYSTEM

#24
20140251502
2014-09-11

Methods of Treating Metal Surfaces and Devices Formed Thereby

#25
20140150997
2014-06-05

HEAT PIPE AND PROCESSING METHOD THEREOF

#26
20140094356
2014-04-03

TREATMENT PROCESS, OXIDE-FORMING TREATMENT COMPOSITION, AND TREATED COMPONENT

#27
20140048181
2014-02-20

Flat Steel Product and Method for Producing a Flat Steel Product

#28
20130261735
2013-10-03

Magnesium alloy implants with controlled degradation

#29
20130244001
2013-09-19

Superhydrophobic nanostructures

#30
20130056363
2013-03-07

Ultra-fast boriding of metal surfaces for improved properties

#31
20120267011
2012-10-25

SULFUR TREATMENT FOR COPPER ZINC ALLOYS

#32
20120178200
2012-07-12

INTEGRATED IN-LINE PROCESSING SYSTEM FOR SELECTIVE EMITTER SOLAR CELLS

#33
20110195208
2011-08-11

Flexible pipe having increased acid resistance and/or corrosion resistance

#34
20110177430
2011-07-21

Titanium material for solid polymer fuel cell separator having low contact resistance and method of production of same

#35
20110073217
2011-03-31

Wear resistant device and process therefor

#36
20100132843
2010-06-03

Trivalent chromium-containing composition for use in corrosion resistant coatings on metal surfaces

#37
20100018611
2010-01-28

ULTRA-FAST BORIDING OF METAL SURFACES FOR IMPROVED PROPERTIES

#38
20090202736
2009-08-13

Metal separator for fuel cell and method for producing the same

#39
20080166548
2008-07-10

Coating material for thermal barrier coating having excellent corrosion resistance and heat resistance and method of producing the same

#40
20080057686
2008-03-06

CONTINUOUS DOPANT ADDITION

#41
20070215572
2007-09-20

SUBSTRATE PROCESSING METHOD AND SUBSTRATE PROCESSING APPARATUS

#42
20060182888
2006-08-17

Modifying steel surfaces to mitigate fouling and corrosion

#43
20050100757
2005-05-12

Thermal barrier coating having a heat radiation absorbing topcoat