F22B21/14 - CPC Classification Index

ClassID:

155522 ⎘

F22B21/14 - 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 substantially straight water tubes involving a single upper drum and two or more lower drums

Sub-classes:

F22B21/16 » the lower drums being interconnected by further water tubes 2

Recent Application in this class:

20190277491

2019-09-12

Flameless steam boiler

20170234529

2017-08-17

Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification

20160109116

2016-04-21

Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification

20130276723

2013-10-24

Method and apparatus for improved firing of biomass and other solid fuels for steam production and gasification