Inventor
SHIN AKIHIKO
KR8 patents
Patents
8 patentsUS9859538B2Jan 2, 2018
Film production method and film production device
SUMITOMO CHEMICAL CO2 citations67
US11239529B2Feb 1, 2022
Film production method
SUMITOMO CHEMICAL CO0 citations61
US10707465B2Jul 7, 2020
Film manufacturing method, film manufacturing apparatus, and film
SUMITOMO CHEMICAL CO0 citations48
US10461296B2Oct 29, 2019
Battery separator film, nonaqueous electrolyte secondary battery separator, and nonaqueous electrolyte secondary battery
SUMITOMO CHEMICAL CO0 citations47
US10431795B2Oct 1, 2019
Film production method
SUMITOMO CHEMICAL CO0 citations46
US10026939B2Jul 17, 2018
Battery separator producing method and battery separator producing apparatus
SUMITOMO CHEMICAL CO0 citations46
US10563299B2Feb 18, 2020
Heating roller and film production method
SUMITOMO CHEMICAL CO0 citations39
US10263232B2Apr 16, 2019
Nonaqueous electrolyte secondary battery separator heating device and nonaqueous electrolyte secondary battery separator production method
SUMITOMO CHEMICAL CO0 citations39