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DIFF Subgroup
H02K 15/04

of windings prior to their mounting into the machines (insulating windings H02K15/10, H02K15/12)

Introduced: September 1968

Title

Titles differ between systems:

IPC: of windings prior to their mounting into the machines

CPC: of windings prior to their mounting into the machines (insulating windings H02K15/10, H02K15/12)

Full Title

Full titles differ between systems:

IPC:

Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines > of windings prior to their mounting into the machines

CPC:

Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines > of windings prior to their mounting into the machines (insulating windings H02K15/10, H02K15/12)

Additional Content IPC

Applying solid insulation to windings, stators or rotors Impregnating, heating or drying of windings, stators, rotors or machines

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

IPC defines codes here since 2025.

Child Classifications

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  • H02K 15/0407 Manufacturing of windings by etching, printing or stamping the complete coils since 2025 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H02,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 54,496
  2. MITSUBISHI ELECTRIC CORPORATION JP 10,495
  3. TOYOTA MOTOR CORPORATION 9,464
  4. GUANGDONG POWER GRID CORPORATION 9,339
  5. ROBERT BOSCH DE 8,226
  6. SIEMENS DE 8,218
  7. DENSO CORPORATION 7,063
  8. MITSUBISHI ELECTRIC CORPORATION 6,619
  9. SAMSUNG ELECTRONICS COMPANY KR 5,826
  10. GREE ELECTRIC APPLIANCES 5,094

Top Applicants (CPC)

Class H02,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 24,515
  2. MITSUBISHI ELECTRIC CORPORATION JP 11,346
  3. SIEMENS DE 9,026
  4. ROBERT BOSCH DE 9,005
  5. SAMSUNG ELECTRONICS COMPANY KR 6,729
  6. GUANGDONG POWER GRID CORPORATION 5,740
  7. DENSO CORPORATION JP 5,077
  8. LG ELECTRONICS KR 5,041
  9. LG INNOTEK COMPANY KR 4,442
  10. TOYOTA MOTOR CORPORATION 4,349