Inventor
IZAWA HIROTAKE
JP13 patents
⚠️ This page may combine multiple inventors who share the name “IZAWA HIROTAKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI PENCIL CO
10 patentsUS7802936B1Sep 28, 2010
Mechanical pencil
MITSUBISHI PENCIL CO16 citations83
US7654763B2Feb 2, 2010
Mechanical pencil
MITSUBISHI PENCIL CO10 citations82
US7815385B2Oct 19, 2010
Mechanical pencil
MITSUBISHI PENCIL CO7 citations71
US12187068B2Jan 7, 2025
Fiber-bundled part for writing instruments, and pen tip and writing instrument using the fiber-bundled part
MITSUBISHI PENCIL CO0 citations62
US7850380B2Dec 14, 2010
Mechanical pencil
MITSUBISHI PENCIL CO5 citations62
US7850381B2Dec 14, 2010
Mechanical pencil
MITSUBISHI PENCIL CO5 citations62
US7806615B1Oct 5, 2010
Mechanical pencil
MITSUBISHI PENCIL CO5 citations62
US12227024B2Feb 18, 2025
Writing implement
MITSUBISHI PENCIL CO0 citations56
US9358828B2Jun 7, 2016
Mechanical pencil
MITSUBISHI PENCIL CO1 citations50
US9669649B2Jun 6, 2017
Mechanical pencil
MITSUBISHI PENCIL CO0 citations34