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PCE
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DIFF Subgroup
F15B 11/036

by means of servomotors having a plurality of working chambers

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Servomotor systems without provision for follow-up action > Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member > for controlling the actuating force > by means of servomotors having a plurality of working chambers

CPC:

Servomotor systems without provision for follow-up action; (F15B3/00 takes precedence) > Systems essentially incorporating special features for controlling the speed or actuating force of an output member > for controlling the actuating force (F15B11/024 takes precedence) > by means of servomotors having a plurality of working chambers

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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Top Applicants

Top Applicants (IPC)

Class F15,2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 1,079
  2. SCHAEFFLER TECHNOLOGIES & COMPANY DE 980
  3. SMC CORPORATION JP 737
  4. HITACHI CONSTRUCTION MACHINERY COMPANY JP 674
  5. KYB CORPORATION JP 525
  6. CATERPILLAR US 461
  7. FESTO & COMPANY DE 451
  8. ZHEJIANG UNIVERSITY 448
  9. HITACHI CONSTRUCTION MACHINERY COMPANY 442
  10. XUZHOU HEAVY MACHINERY COMPANY 404

Top Applicants (CPC)

Class F15,2013–2023, worldwide · Source: EPO PATSTAT

  1. ROBERT BOSCH DE 1,281
  2. SMC CORPORATION JP 865
  3. HITACHI CONSTRUCTION MACHINERY COMPANY JP 814
  4. KYB CORPORATION JP 584
  5. SCHAEFFLER TECHNOLOGIES & COMPANY DE 536
  6. CATERPILLAR US 532
  7. FESTO & COMPANY DE 486
  8. JOHN DEERE US 419
  9. KAWASAKI HEAVY IND JP 368
  10. HAMILTON SUNDSTRAND US 368