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PCE
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DIFF Subgroup
F01K 21/04

using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas (; direct-contact steam generators in general F22B)

Introduced: September 1968

Title

Titles differ between systems:

IPC: using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas

CPC: using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas (; direct-contact steam generators in general F22B)

Full Title

Full titles differ between systems:

IPC:

Steam engine plants not otherwise provided for > using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas

CPC:

Steam engine plants not otherwise provided for > using mixtures of steam and gas; Plants generating or heating steam by bringing water or steam into direct contact with hot gas (; direct-contact steam generators in general F22B)

Of 3 combined children, 0 exist in both systems.

3 codes are CPC-only extensions.

Child Classifications

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