EP 3869994 B1 20220309 - HAIR STYLING USING DIELECTRIC HEATING
Title (en)
HAIR STYLING USING DIELECTRIC HEATING
Title (de)
HAARSTYLING MITHILFE VON DIELEKTRISCHER ERWÄRMUNG
Title (fr)
COIFFAGE UTILISANT UN CHAUFFAGE DIÉLECTRIQUE
Publication
Application
Priority
- EP 18202589 A 20181025
- EP 2019077840 W 20191015
Abstract (en)
[origin: EP3643196A1] In a hair styling device (100) comprising electrodes (102) for applying a radio-frequent signal to hair, a frequency of the radio-frequent signal is between 50 MHz and 90 MHz. Preferably, a voltage of the radio-frequent signal does not exceed 30 V, while a voltage not exceeding 10 V would work well in a configuration that applies another heat source (103) for heating hair up till a first temperature that is no more than 150 °C (and thus lower than a critical temperature at which hair cuticle damage will occur), and the radio-frequent electrodes (102) for - in combination with heat from the other heat source (103) - selectively heating a hair cortex to a second temperature exceeding the first temperature and sufficiently high for hair styling.
IPC 8 full level
CPC (source: EP KR US)
A45D 1/04 (2013.01 - EP KR US); A45D 1/06 (2013.01 - US); A45D 1/28 (2013.01 - US); A45D 2/001 (2013.01 - EP KR US); A45D 7/00 (2013.01 - US); A45D 19/16 (2013.01 - US); A45D 20/00 (2013.01 - US); A45D 2001/002 (2013.01 - KR US); A45D 2200/20 (2013.01 - EP KR); A45D 2200/205 (2013.01 - EP KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3643196 A1 20200429; BR 112021007519 A2 20210727; CN 112911963 A 20210604; CN 112911963 B 20240416; EP 3869994 A1 20210901; EP 3869994 B1 20220309; JP 2021529077 A 20211028; JP 7066059 B2 20220512; JP 7066059 B6 20220607; KR 102660110 B1 20240424; KR 20210079356 A 20210629; PL 3869994 T3 20220620; US 2021393012 A1 20211223; WO 2020083698 A1 20200430
DOCDB simple family (application)
EP 18202589 A 20181025; BR 112021007519 A 20191015; CN 201980069989 A 20191015; EP 19783566 A 20191015; EP 2019077840 W 20191015; JP 2021520378 A 20191015; KR 20217015615 A 20191015; PL 19783566 T 20191015; US 201917279112 A 20191026