Field briefing
F01D · Non-positive displacement machines or engines
Non-positive displacement machines or engines, e.g. steam turbines. Patents classified in CPC F01D, part of Engines, machines, heating and lighting.
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Newest patents in F01D · Non-positive displacement machines or engines
1 patent imported from the European Patent Office; newest published 2026-07-28; most active companies: NO 719 Research Inst China State Shipbuilding Corporation Limited.
- Pressure balance structure and distribution box CN122475016A, published 2026-07-28
Most active companies
Counted over the newest 1 imported patents in this industry.