B21K21/16 - CPC Classification Index

ClassID:

39334 ⎘

B21K21/16 - CPC Classification

Classification description:

Making hollow articles not covered by a single preceding sub-group Remodelling hollow bodies with respect to the shape of the cross-section

Recent Application in this class:

20200248792

2020-08-06

Metal sleeve and method for producing it

20170232502

2017-08-17

Apparatus and method for forming an antipollution device housing

20160265645

2016-09-15

Metal sleeve and method for producing it

20150352629

2015-12-10

FORGING DEVICE AND FORGING METHOD

20150283600

2015-10-08

Ball screw and manufacturing method of nut for ball screw

20150239029

2015-08-27

Press-work method and bottomed container

20140260501

2014-09-18

Method for forming non-rectangular section ring from rectangular section ring

20130117990

2013-05-16

Method of forming industrial housings

20130068437

2013-03-21

Tube for Heat Exchanger, Heat Exchanger, and Method for Manufacturing Tube for Heat Exchanger

#10

20130036597

2013-02-14

Earphone/Headphone/Ear Bud

#11

20130008275

2013-01-10

Method for manufacturing nut for ball screw and ball screw

#12

20120325036

2012-12-27

Ball Screw and Manufacturing Method of Nut for Ball Screw

#13

20120304464

2012-12-06

METHOD FOR MANUFACTURING HOLLOW ENGINE VALVE

#14

20120246934

2012-10-04

Method for producing metallic-sodium-filled engine valve

#15

20120216590

2012-08-30

Method of forming industrial housings

#16

20120210765

2012-08-23

Method for Manufacturing Mechanical Part Excellent in Rolling Fatigue Life

#17

20120137519

2012-06-07

Apparatus and method for forming an antipollution device housing

#18

20110280678

2011-11-17

Hollow drill and a production process for the same

#19

20110209802

2011-09-01

METHOD FOR PROCESSING STEEL TUBES AND THE LIKES

#20

20110011149

2011-01-20

Methods to provide a feature on a needle

#21

20080118326

2008-05-22

Method for manufacturing a fastening portion for a steering apparatus

#22

20060107718

2006-05-25

Deformed forging

#23

18669823

2025-05-20

Material dispense tips

#24

18143190

2024-06-25

Material dispense tips

#25

17689050

2023-05-16

Method for manufacturing a material dispense tip

#26

16775666

2022-04-05

Material dispense tips and methods for manufacturing the same

#27

15292427

2020-03-10

Material dispense tip

#28

14719169

2019-03-26

Attachments for personalizing headphones

#29

14217809

2016-11-08

Method for manufacturing a material dispense tip