ClassID:

38337

B21C37/157 - CPC Classification

Classification description:

Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes; Making tubes of special shape; Making tube fittings; Making tubes with wall irregularities Perforations

Recent Application in this class:
#1
20210213506
2021-07-15

Air conduit spirally wound and provided with a plurality of holes, related manufacturing machine and method and related strip

#2
20200383778
2020-12-10

Stents for prosthetic heart valves and methods of making same

#3
20200263812
2020-08-20

HELICALLY WOUND TUBULAR STRUCTURES

#4
20170100242
2017-04-13

Stents for prosthetic heart valves and methods of making same

#5
20160175904
2016-06-23

Manufacturing method for interlocked tube and manufacturing device therefor

#6
20160003546
2016-01-07

Multichannel heat exchanger tubes with flow path inlet sections

#7
20150040372
2015-02-12

Method and apparatus for manufacturing interlocking pipe

#8
20140261840
2014-09-18

Manufacture method of tubular member and tubular member manufactured by the same

#9
20130319375
2013-12-05

Tubular pressure accumulator, in particular for mixture-compressing, spark-ignited internal combustion engines

#10
20130305800
2013-11-21

Stents for prosthetic heart valves and methods of making same

#11
20130248158
2013-09-26

Method for manufacturing refrigerant guide tube of heat exchanger, refrigerant guide tube manufactured using the method and heat exchanger with the refrigerant guide tube

#12
20120267138
2012-10-25

Hand-held power tool and production method

#13
20120247600
2012-10-04

Rotary die forming process and apparatus for fabricating multi-port tubes

#14
20110315364
2011-12-29

Multichannel heat exchanger tubes with flow path inlet sections

#15
20110302782
2011-12-15

Method of separating heat exchanger tubes and an apparatus for same

#16
20110296891
2011-12-08

CORRUGATED INSERT CUTTING APPARATUS AND METHOD

#17
20110031296
2011-02-10

Method of producing tubes and a rolling mill train for producing tubes

#18
20100288481
2010-11-18

FLAT TUBE, FLAT TUBE HEAT EXCHANGER, AND METHOD OF MANUFACTURING SAME

#19
20100268324
2010-10-21

Stents for prosthetic heart valves and methods of making same

#20
20100243225
2010-09-30

FLAT TUBE, FLAT TUBE HEAT EXCHANGER, AND METHOD OF MANUFACTURING SAME

#21
20090218085
2009-09-03

FLAT TUBE, FLAT TUBE HEAT EXCHANGER, AND METHOD OF MANUFACTURING SAME

#22
20090056927
2009-03-05

Flat tube, flat tube heat exchanger, and method of manufacturing same

#23
20090020278
2009-01-22

Flat tube, flat tube heat exchanger, and method of manufacturing same

#24
20090020277
2009-01-22

Flat tube, flat tube heat exchanger, and method of manufacturing same

#25
20090019696
2009-01-22

FLAT TUBE, FLAT TUBE HEAT EXCHANGER, AND METHOD OF MANUFACTURING SAME

#26
20090019695
2009-01-22

Flat tube, flat tube heat exchanger, and method of manufacturing same

#27
20090019694
2009-01-22

Flat tube, flat tube heat exchanger, and method of manufacturing same

#28
20090019689
2009-01-22

Flat tube, flat tube heat exchanger, and method of manufacturing same

#29
20090014165
2009-01-15

FLAT TUBE, FLAT TUBE HEAT EXCHANGER, AND METHOD OF MANUFACTURING SAME

#30
20080314189
2008-12-25

Deformable element of a steering wheel spindle in the form of a corrugated tube

#31
20080313906
2008-12-25

METHOD OF FORMING HEAT EXCHANGER TUBES

#32
20080311422
2008-12-18

Method for producing a heavy duty composite part

#33
20080222869
2008-09-18

Machine to produce expanded metal spirally lock-seamed tubing from solid coil stock

#34
20080164007
2008-07-10

Method of making a folded condenser tube

#35
20080111385
2008-05-15

Method for manufacturing impact absorber for vehicle

#36
20070144722
2007-06-28

Tube production method, heat-exchange tube produced by the method and heat exchanger using the heat-exchange tube

#37
20060223026
2006-10-05

Liquid injection needle element capable of jetting a liquid in a predetermined angle range and method of producing the same

#38
20060179769
2006-08-17

Method and apparatus for making tubes

#39
20060108017
2006-05-25

Multiple pipe, method of manufacturing the multiple pipe and device for manufacturing multiple pipe