F22B21/30 - CPC Classification Index

ClassID:

155531 ⎘

F22B21/30 - CPC Classification

Classification description:

Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from water tubes of form other than straight or substantially straight bent in U-loop form

Sub-classes:

F22B21/32 » disposed horizontally in abutting connection with upright headers or rising water mains 1

Recent Application in this class:

20220170626

2022-06-02

MULTI-TUBE ONCE-THROUGH BOILER

20200096191

2020-03-26

Vapour and liquid drum for a shell-and-tube heat exchanger

20160161106

2016-06-09

Shell-and-tube apparatus for heat recovery from a hot process stream

20150226420

2015-08-13

Steam generator

20140196873

2014-07-17

Method and device for protecting heat exchanger pipes and a ceramic component

20120003550

2012-01-05

STEAM GENERATOR FOR FUEL CELL WITH DUAL USE FOR HEATING FUEL ELECTRODE GAS

20110083619

2011-04-14

DUAL ENHANCED TUBE FOR VAPOR GENERATOR

20100326373

2010-12-30

Boiler with improved hot gas passages