F01D 1/02 with stationary working-fluid guiding means and bladed or like rotor
Introduced: September 1968
Last revised: January 2006
Full Title
Non-positive-displacement machines or engines, e.g. steam turbines > with stationary working-fluid guiding means and bladed or like rotor
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- Subclass:
- NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
Filing statistics
IPC F01D 1/02 belongs to the parent subclass F01D, which recorded 110,124 patent applications worldwide between 2013 and 2023. Annual filings declined from 10,791 in 2013 to 7,906 in 2023 (-27%), peaking at 11,198 applications in 2014. The most active applicants in class F01 are GE (GENERAL ELECTRIC COMPANY) (8,496 applications), UNITED TECHNOLOGIES CORPORATION (UTC) (7,291 applications) and SAFRAN AIRCRAFT ENGINES (5,503 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
5 direct subcodes
Child Classifications
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- F01D 1/04 traversed by the working-fluid substantially axially
- F01D 1/06 traversed by the working-fluid substantially radially
- F01D 1/1 having two or more stages subjected to working-fluid flow without essential intermediate pressure change, i.e. with velocity stages
- F01D 1/12 with repeated action on same blade ring
- F01D 1/16 characterised by having both reaction stages and impulse stages
Top Applicants
Top 10 applicants by patent filingsfor class F01, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 8,496
- UNITED TECHNOLOGIES CORPORATION (UTC) US 7,291
- SAFRAN AIRCRAFT ENGINES FR 5,503
- TOYOTA MOTOR CORPORATION 4,556
- SIEMENS DE 3,992
- HYUNDAI MOTOR COMPANY KR 3,929
- RAYTHEON TECHNOLOGIES CORPORATION US 3,534
- FORD GLOBAL TECHNOLOGIES US 3,407
- TOYOTA MOTOR CORPORATION JP 3,042
- WEICHAI POWER COMPANY 2,888