DIFF Subgroup
A45D 20/22 Helmets with hot air supply or ventilating means, e.g. electrically heated air current
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Hair drying devices; Accessories therefor > Helmets with hot air supply or ventilating means, e.g. electrically heated air current
CPC:
Hair drying devices; Accessories therefor (A45D2/00 takes precedence) > Helmets with hot air supply or ventilating means, e.g. electrically heated air current
IPC and CPC are identically structured here. All 9 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- A45D 20/24 Shape or structure of the helmet body (A45D20/26 takes precedence) +1 CPC IPC+CPC Available in IPC and CPC
- A45D 20/30 Electric circuitry specially adapted for hair drying devices IPC+CPC Available in IPC and CPC
- A45D 20/42 Additional devices or measures, e.g. for noise damping, for musical entertainment IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class A45,2013–2023, worldwide · Source: EPO PATSTAT
- L'OREAL FR 3,344
- DYSON GB 1,184
- AMOREPACIFIC CORPORATION KR 858
- SEB FR 807
- PHILIPS ELECTRONICS NL 518
- P&G (PROCTER & GAMBLE COMPANY) US 502
- YONWOO COMPANY KR 500
- LG HOUSEHOLD & HEALTH CARE KR 499
- ELC MANAGEMENT US 488
- ALBEA SERVICES FR 482
Top Applicants (CPC)
Class A45,2013–2023, worldwide · Source: EPO PATSTAT
- L'OREAL FR 3,874
- DYSON GB 1,223
- AMOREPACIFIC CORPORATION KR 877
- SEB FR 842
- P&G (PROCTER & GAMBLE COMPANY) US 741
- PHILIPS ELECTRONICS NL 613
- L'OREAL 555
- ELC MANAGEMENT US 554
- YONWOO COMPANY KR 535
- ALBEA SERVICES FR 523