ClassID:

119129

C21D9/68 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length; Furnaces for treating strips or wire Furnace coilers; Hot coilers

Recent Application in this class:
#1
20260001129
2026-01-01

PLASMA APPARATUS FOR THE PRODUCTION OF HIGH QUALITY SPHERICAL POWDERS AT HIGH CAPACITY

#2
20250051889
2025-02-13

STEEL SHEET AND MANUFACTURING METHOD THEREFOR

#3
20240254589
2024-08-01

SELECTIVE HEAT TREATMENT OF METALS USING A COIL-IN-FURNACE SYSTEM

#4
20230257860
2023-08-17

Method of producing a non-oriented electrical steel sheet

#5
20210332466
2021-10-28

STEEL PRODUCT FOR USE IN CONTACT WITH STEEL MATERIAL

#6
20210332464
2021-10-28

Non-oriented electrical steel sheet and method of producing same

#7
20210254200
2021-08-19

Method for manufacturing cold-rolled or zinc-plated dual-phase steel plate over 980 MPa

#8
20190309396
2019-10-10

High-strength steel sheet and method of manufacturing the same

#9
20190169776
2019-06-06

Heat distribution management device for yarn treatment

#10
20190032168
2019-01-31

Continuous annealing apparatus

#11
20180312938
2018-11-01

Method and apparatus for continuous thermal treatment of a steel strip

#12
20180169763
2018-06-21

Plasma apparatus for the production of high quality spherical powders at high capacity

#13
20180044746
2018-02-15

Batch furnace for annealing material and method for heat treatment

#14
20180029099
2018-02-01

WINDING/UNWINDING DEVICE AND METHOD FOR WINDING/UNWINDING A METAL PRODUCT IN A ROLLING LINE

#15
20160304984
2016-10-20

Method for continuous thermal treatment of a steel strip

#16
20130068871
2013-03-21

Winding/unwinding device and method for winding/ unwinding a metal product in a rolling line

#17
20120227455
2012-09-13

Magnesium roll mill

#18
20120128997
2012-05-24

Coil material and method for manufacturing the same

#19
20120119008
2012-05-17

Hot coiler drum working at 900-1200° C. and method for producing the hot coiler drum

#20
20100101293
2010-04-29

COILING FURNACE

#21
20090320544
2009-12-31

Coiling furnace

#22
20090178738
2009-07-16

Self-annealing enclosure

#23
20080034829
2008-02-14

Apparatus for removing dent in sheet metal and method thereof

#24
20080029191
2008-02-07

Apparatus and method for coil cooling

#25
20080028813
2008-02-07

Process and Production Line for Manufacturing Hot Ultrathin Steel Strips with Two Casting Lines for a Single Endless Rolling Line

#26
20060201222
2006-09-14

Thermo-electromechanical process and system for coiling and uncoiling an in-line hot rolled pre-strip from thin slab continuous casting

#27
20060043653
2006-03-02

Self-annealing enclosure