Inventor
FUKUMOTO TAKEO
JP18 patents
⚠️ This page may combine multiple inventors who share the name “FUKUMOTO TAKEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI PENCIL CO
13 patentsUS9545813B2Jan 17, 2017
Ball pen
MITSUBISHI PENCIL CO9 citations83
US7654763B2Feb 2, 2010
Mechanical pencil
MITSUBISHI PENCIL CO10 citations82
US6854909B2Feb 15, 2005
Lead propelling device
MITSUBISHI PENCIL CO8 citations73
US10336129B2Jul 2, 2019
Writing implement
MITSUBISHI PENCIL CO4 citations72
US9981499B2May 29, 2018
Ballpoint pen
MITSUBISHI PENCIL CO2 citations72
US9889701B2Feb 13, 2018
Writing implement
MITSUBISHI PENCIL CO3 citations72
US7815385B2Oct 19, 2010
Mechanical pencil
MITSUBISHI PENCIL CO7 citations71
US9162515B2Oct 20, 2015
Writing implement refill and writing implement
MITSUBISHI PENCIL CO3 citations62
US8043686B2Oct 25, 2011
Method of moulding composite member, and composite member
MITSUBISHI PENCIL CO2 citations59
US11472221B2Oct 18, 2022
Writing implement
MITSUBISHI PENCIL CO0 citations55
US11964509B2Apr 23, 2024
Writing tool
MITSUBISHI PENCIL CO0 citations51
US7452148B2Nov 18, 2008
Lead holding structure of mechanical pencil
MITSUBISHI PENCIL CO1 citations51
US10576774B2Mar 3, 2020
Ballpoint pen
MITSUBISHI PENCIL CO0 citations37