Inventor
CHANG CHENG-HSIUNG
US18 patents
⚠️ This page may combine multiple inventors who share the name “CHANG CHENG-HSIUNG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FORESEE SCIENTECH LTD
6 patentsUSD909111SFeb 2, 2021
Part of pedicure foot spa massage chair
FORESEE SCIENTECH LTD17 citations93
USD917021SApr 20, 2021
Sprayer for a foot spa tub
FORESEE SCIENTECH LTD5 citations71
USD907223SJan 5, 2021
Pedicure spa tub
FORESEE SCIENTECH LTD4 citations71
US10806664B1Oct 20, 2020
Spa sprayer
FORESEE SCIENTECH LTD2 citations71
US10807115B1Oct 20, 2020
Fixing structure of spa sprayer
FORESEE SCIENTECH LTD1 citations61
US12201581B2Jan 21, 2025
Rotatable fixing structure of water spray device
FORESEE SCIENTECH LTD0 citations50
CHAMPION INT CORP
6 patentsUS4104437AAug 1, 1978
Pressure-sensitive copy system including ureido fluoran chromogenic compounds
CHAMPION INT CORP16 citations73
US4012419AMar 15, 1977
Bisfluoran chromogenic compounds, preparation thereof, and pressure-sensitive copy systems employing same
CHAMPION INT CORP9 citations73
US3954803AMay 4, 1976
Dilactone chromogenic compounds and preparation thereof
CHAMPION INT CORP10 citations73
US4071469AJan 31, 1978
Solvent composition for use in carbonless copy systems
CHAMPION INT CORP6 citations62
US4187193AFeb 5, 1980
Micro-capsules containing ureido fluoran chromogenic compounds
CHAMPION INT CORP1 citations51
US4110343AAug 29, 1978
Bisfluoran chromogenic compounds, preparation thereof, and pressure-sensitive copy systems employing same
CHAMPION INT CORP0 citations51