Inventor
IWAKI HIROFUMI
JP4 patents
⚠️ This page may combine multiple inventors who share the name “IWAKI HIROFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
3 patentsUS4869978ASep 26, 1989
Cylindrical alkaline batteries
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations71
US5316557AMay 31, 1994
Manufacturing process of alkaline cell
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations61
US6004687ADec 21, 1999
Cylindrical alkaline battery
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD4 citations57