Inventor
MARUYAMA SEIICHI
JP10 patents
⚠️ This page may combine multiple inventors who share the name “MARUYAMA SEIICHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI PENCIL CO
5 patentsUS9545813B2Jan 17, 2017
Ball pen
MITSUBISHI PENCIL CO9 citations83
US11084316B2Aug 10, 2021
Applicator
MITSUBISHI PENCIL CO3 citations71
US10299561B2May 28, 2019
Makeup tool
MITSUBISHI PENCIL CO2 citations71
US9162515B2Oct 20, 2015
Writing implement refill and writing implement
MITSUBISHI PENCIL CO3 citations62
US11654711B2May 23, 2023
Writing tool provided with refill
MITSUBISHI PENCIL CO0 citations50