Inventor
TAKATA ATSUHIRO
JP12 patents
Patents
12 patentsUS6638988B2Oct 28, 2003
Porous film, separator for cell, and cell
SUMITOMO CHEMICAL CO22 citations92
US8049105B2Nov 1, 2011
Porous electrodes, devices including the porous electrodes, and methods for their production
SUMITOMO CHEMICAL CO8 citations83
US7282109B2Oct 16, 2007
Method for producing laminated porous polyolefin film and laminated porous polyolefin film
SUMITOMO CHEMICAL CO11 citations83
US10014503B2Jul 3, 2018
Nonaqueous electrolyte secondary battery separator, nonaqueous electrolyte secondary battery laminated separator, nonaqueous electrolyte secondary battery member, and nonaqueous electrolyte secondary battery
SUMITOMO CHEMICAL CO2 citations67
US11764440B2Sep 19, 2023
Nonaqueous electrolyte secondary battery separator
SUMITOMO CHEMICAL CO0 citations56
US7223806B2May 29, 2007
Manufacturing method of film-like materials of resin and film-like materials of resin
SUMITOMO CHEMICAL CO1 citations51
US7049361B2May 23, 2006
Polyolefin series resinfilm, composition for preparing the same, process for preparing the composition for preparing the same, and apparatus for preparing the same
SUMITOMO CHEMICAL CO1 citations51
US6918559B2Jul 19, 2005
Method of slitting a battery separator-use resin film object and such a battery separator-use resin film object
SUMITOMO CHEMICAL CO0 citations51
US6884836B2Apr 26, 2005
Polyolefin based resin film and a composition for a polyolefin type resin film
SUMITOMO CHEMICAL CO0 citations51
US6852270B2Feb 8, 2005
Production method of drawn film
SUMITOMO CHEMICAL CO1 citations51
US10707465B2Jul 7, 2020
Film manufacturing method, film manufacturing apparatus, and film
SUMITOMO CHEMICAL CO0 citations48
US12334590B2Jun 17, 2025
Nonaqueous electrolyte secondary battery separator, nonaqueous electrolyte secondary battery member, and nonaqueous electrolyte secondary battery
SUMITOMO CHEMICAL CO0 citations44