Inventor
SAKAMOTO AKINOBU
JP9 patents
⚠️ This page may combine multiple inventors who share the name “SAKAMOTO AKINOBU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
8 patentsUS5616627AApr 1, 1997
Polypropylene resin composition, polypropylene resin foamed material and process for producing the same
SUMITOMO CHEMICAL CO30 citations88
US6255237B1Jul 3, 2001
Laminated sheet
SUMITOMO CHEMICAL CO12 citations69
US6290884B1Sep 18, 2001
Process for producing uncrosslinked polypropylene-based resin foam sheets and uncrosslinked polypropylene-based resin foam sheets
SUMITOMO CHEMICAL CO5 citations61
US6693140B2Feb 17, 2004
Container comprising foamed olefin resin and process for producing same
SUMITOMO CHEMICAL CO3 citations59
US11491494B2Nov 8, 2022
Separator film conveyance device for nonaqueous electrolytic-solution secondary battery and method for manufacturing separator film for nonaqueous electrolytic-solution secondary battery
SUMITOMO CHEMICAL CO0 citations58
US6878318B2Apr 12, 2005
Methods for producing multi-layer foamed sheets
SUMITOMO CHEMICAL CO3 citations56
US10457520B2Oct 29, 2019
Film roll and method for producing film roll
SUMITOMO CHEMICAL CO0 citations39
US10301135B2May 28, 2019
Film winding device control method, film roll, film winding device, and film roll production method
SUMITOMO CHEMICAL CO0 citations39