ClassID:

119084

C21D9/18 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools

Recent Application in this class:
#1
20240141465
2024-05-02

MARTENSITTC STEEL AND METHOD OF MANUFACTURING A MARTENSITIC STEEL

#2
20230381985
2023-11-30

Feather-Indented Knives and Methods of Production

#3
20230330800
2023-10-19

Production method of novel austenitic stainless steel kitchen knives and low-carbon high-chromium martensitic alloy powder

#4
20220340988
2022-10-27

STEEL FOR KNIVES, STEEL FOR MARTENSITIC KNIVES, KNIFE, AND PRODUCTION METHOD FOR STEEL FOR MARTENSITIC KNIVES

#5
20220250266
2022-08-11

Razor blade and composition for a razor blade

#6
20210094132
2021-04-01

Method for manufacturing kitchen knife by using multilayer material

#7
20200102622
2020-04-02

Tool steel having strength and high impact toughness

#8
20200061747
2020-02-27

TOOL WITH CUTTING EDGE AND METHOD OF MANUFACTURING IT

#9
20190226043
2019-07-25

METHODS FOR MANUFACTURING ULTRA-HARD AND WEAR-RESISTANT COMPOSITE BLADE

#10
20190211418
2019-07-11

Blade material

#11
20190160521
2019-05-30

Manufacturing method of a cutting member

#12
20180127858
2018-05-10

MARTENSITIC STAINLESS STEEL, METHOD FOR THE PRODUCTION OF A SEMI-FINISHED PRODUCT FROM SAID STEEL, AND CUTTING TOOL PRODUCED FROM THE SEMI-FINISHED PRODUCT

#13
20160362770
2016-12-15

Steel strip for cutlery

#14
20160333523
2016-11-17

Creping blade and method for its manufacturing

#15
20160333436
2016-11-17

Multilayer Cutting Blade Having a Stainless Steel Core

#16
20160309648
2016-10-27

Reciprocating cutting blade with cladding

#17
20160032418
2016-02-04

Method for producing steel for blades

#18
20150082764
2015-03-26

LASER HARDENED KNIFE GUARD

#19
20140245865
2014-09-04

Cutting members for shaving razors

#20
20130309126
2013-11-21

Martensitic stainless steel highly resistant to corrosion, and method for manufacturing same

#21
20130042948
2013-02-21

Decorative Steel Composition Having a Textured Cyrstalline Surface

#22
20120237390
2012-09-20

Martensitic Stainless Steel Produced by a Twin Roll Strip Casting Process and Method for Manufacturing Same

#23
20120227546
2012-09-13

SOLID STATE PROCESSING OF HAND-HELD KNIFE BLADES TO IMPROVE BLADE PERFORMANCE

#24
20110315275
2011-12-29

Method of treating parts for kitchen utensils

#25
20110253826
2011-10-20

GRANULATOR BLADES WITH A HIGH WEAR RESISTANCE AND SHARPENING METHOD THEREOF

#26
20090194203
2009-08-06

METHOD OF MANUFACTURING A BLADE WITH HIGH HARDNESS NITRIDE LAYER

#27
20080229893
2008-09-25

Tools with a thermo-mechanically modified working region and methods of forming such tools

#28
20080101980
2008-05-01

Steel alloy for cutting tools

#29
20080096037
2008-04-24

Sreading knives, doctor blades and crepe scrapers and powder metallurgical method for producing the same

#30
20080089804
2008-04-17

Martensitic free cutting stainless steel

#31
20070234576
2007-10-11

Cutting members for shaving razors

#32
20070137050
2007-06-21

Razor blades and compositions and processes for the production of razor blades

#33
20070000580
2007-01-04

Martensitic stainless steel and method of the manufacture

#34
20060090603
2006-05-04

Knife blade manufacturing process

#35
20060032333
2006-02-16

Solid state processing of industrial blades, edges and cutting elements

#36
20050252341
2005-11-17

Solid state processing of hand-held knife blades to improve blade performance