Inventor
KAKUTA HIROTOSHI
JP9 patents
⚠️ This page may combine multiple inventors who share the name “KAKUTA HIROTOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JSP CORP
8 patentsUS6986941B2Jan 17, 2006
Multiple layers laminated polyolefin foam
JSP CORP22 citations91
US6543573B2Apr 8, 2003
Speaker unit, speaker system, and speaker diaphragm manufacturing method
JSP CORP11 citations73
US9592642B2Mar 14, 2017
Method for producing multi-layer polyethylene resin foam sheet
JSP CORP2 citations70
US11633942B2Apr 25, 2023
Process for producing laminated foam sheet and extruded laminated foam sheet
JSP CORP0 citations54
US11161328B2Nov 2, 2021
Process for producing laminated foam sheet and extruded laminated foam sheet
JSP CORP0 citations54
US11273621B2Mar 15, 2022
Laminated foam sheet
JSP CORP0 citations47
US12420533B2Sep 23, 2025
Polyethylene-based resin multilayer foam sheet and method for producing same
JSP CORP0 citations41
US9701098B2Jul 11, 2017
Polyethylene-based resin foam sheet
JSP CORP0 citations39