DIFF Subgroup
F01K 19/02 Regenerating by compression
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Regenerating or otherwise treating steam exhaust from steam engine plant > Regenerating by compression
CPC:
Regenerating or otherwise treating steam exhausted from steam engine plant ( plants characterised by use of means for storing steam in an alkali to increase steam pressure F01K5/00; returning condensate to boiler F22D) > Regenerating by compression
IPC and CPC are identically structured here. All 3 subcodes exist in both systems.
Child Classifications
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- F01K 19/08 compression done by injection apparatus, jet blower, or the like IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
Class F01,2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 9,989
- UNITED TECHNOLOGIES CORPORATION (UTC) US 8,110
- SAFRAN AIRCRAFT ENGINES FR 6,248
- HYUNDAI MOTOR COMPANY KR 4,530
- SIEMENS DE 4,461
- FORD GLOBAL TECHNOLOGIES US 4,029
- RAYTHEON TECHNOLOGIES CORPORATION US 3,947
- TOYOTA MOTOR CORPORATION JP 3,734
- GE (GENERAL ELECTRIC COMPANY) 3,415
- SCHAEFFLER TECHNOLOGIES & COMPANY DE 3,063