Inventor
YAN YOUCHUN
CN28 patents
⚠️ This page may combine multiple inventors who share the name “YAN YOUCHUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GUANGDONG ROMAN TECH CO LTD
22 patentsUSD863574SOct 15, 2019
Skin care device
GUANGDONG ROMAN TECH CO LTD60 citations97
USD824175SJul 31, 2018
Electric toothbrush
GUANGDONG ROMAN TECH CO LTD55 citations97
USD824595SJul 31, 2018
Razor
GUANGDONG ROMAN TECH CO LTD42 citations97
USD824103SJul 24, 2018
Razor
GUANGDONG ROMAN TECH CO LTD48 citations97
USD819274SMay 29, 2018
Razor
GUANGDONG ROMAN TECH CO LTD48 citations97
USD812301SMar 6, 2018
Razor
GUANGDONG ROMAN TECH CO LTD57 citations97
USD806228SDec 26, 2017
Water pick
GUANGDONG ROMAN TECH CO LTD74 citations97
USD844246SMar 26, 2019
Interchangeable electric grip
GUANGDONG ROMAN TECH CO LTD22 citations94
USD844242SMar 26, 2019
Razor
GUANGDONG ROMAN TECH CO LTD22 citations94
USD864405SOct 22, 2019
Laser hair removal device
GUANGDONG ROMAN TECH CO LTD35 citations93
USD863578SOct 15, 2019
Laser hair removal device
GUANGDONG ROMAN TECH CO LTD38 citations93
US10357890B2Jul 23, 2019
Detachable floating shaver
GUANGDONG ROMAN TECH CO LTD24 citations93
USD838989SJan 29, 2019
Hair dressing device
GUANGDONG ROMAN TECH CO LTD19 citations93
USD826567SAug 28, 2018
Hair dressing device
GUANGDONG ROMAN TECH CO LTD28 citations93
USD866750SNov 12, 2019
Combined toothbrush and water pick unit
GUANGDONG ROMAN TECH CO LTD20 citations90
USD836837SDec 25, 2018
Hairdressing device
GUANGDONG ROMAN TECH CO LTD13 citations84
USD823542SJul 17, 2018
Razor
GUANGDONG ROMAN TECH CO LTD11 citations84
USD1037557SJul 30, 2024
Hair dryer
GUANGDONG ROMAN TECH CO LTD13 citations83
USD1041075SSep 3, 2024
Hair drier
GUANGDONG ROMAN TECH CO LTD5 citations72
USD1094880SSep 23, 2025
Hair straightener
GUANGDONG ROMAN TECH CO LTD0 citations62
USD1098580SOct 14, 2025
Hair dryer nozzle
GUANGDONG ROMAN TECH CO LTD1 citations59
USD1089828SAug 19, 2025
Hair drier
GUANGDONG ROMAN TECH CO LTD0 citations57