ClassID:

162103

F28F2001/428 - CPC Classification

Classification description:

Tubular elements; Assemblies of tubular elements; Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element Particular methods for manufacturing outside or inside fins

Recent Application in this class:
#1
20250271219
2025-08-28

HEAT EXCHANGER WITH INTERNAL LATTICE NETWORK

#2
20250230890
2025-07-17

ADDITIVE MANUFACTURED RETURN BEND FOR FIRE TUBE OR FURNACE TUBE

#3
20240255234
2024-08-01

Heat exchanger with heat transfer augmentation features

#4
20240044588
2024-02-08

Heat exchanger with heat transfer augmentation features

#5
20240044587
2024-02-08

HEAT EXCHANGER WITH HEAT TRANSFER AUGMENTATION FEATURES

#6
20210389057
2021-12-16

HEAT EXCHANGER

#7
20210310752
2021-10-07

COMPACT GAS-GAS HEAT EXCHANGE TUBE AND MANUFACTURING AND USE METHODS THEREFOR

#8
20210231376
2021-07-29

Header arrangement for additively manufactured heat exchanger

#9
20210172686
2021-06-10

Heat exchange tube, heat exchanger, and manufacturing method for heat exchange tube

#10
20200182559
2020-06-11

Heat exchanger riblet and turbulator features for improved manufacturability and performance

#11
20190376752
2019-12-12

Heat exchanger tank with reinforcement element

#12
20190376696
2019-12-12

Heat exchanger and air conditioner having the same

#13
20190293355
2019-09-26

Microchannel-type aluminum heat exchanger and method of manufacturing the same

#14
20160076828
2016-03-17

Turbulators in enhanced tubes

#15
20150247681
2015-09-03

Evaporation heat transfer tube

#16
20150241140
2015-08-27

Evaporation heat transfer tube with a hollow cavity

#17
20150224561
2015-08-13

Double pipe type heat exchanger and method for manufacturing the same

#18
20150135795
2015-05-21

Method for manufacturing flat pipe

#19
20140360017
2014-12-11

Method for anticorrosion treatment of outer surface of heat exchange tube made of aluminum extrusion and method for producing heat exchanger

#20
20140116668
2014-05-01

COOLER PIPE AND METHOD OF FORMING

#21
20130340986
2013-12-26

Heat exchanger tube with collared fins for enhanced heat transfer

#22
20120043055
2012-02-23

Double pipe type heat exchanger and method for manufacturing the same