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Inventor
OKUMURA SHIGERU
JP
4 patents
⚠️ This page may combine multiple inventors who share the name “OKUMURA SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUBISHI PENCIL KABUSHIKIKAI
3 patents
US7070352B2
Jul 4, 2006
Writing implement
MITSUBISHI PENCIL KABUSHIKIKAI
17 citations
83
US7083349B2
Aug 1, 2006
Writing implement
MITSUBISHI PENCIL KABUSHIKIKAI
4 citations
62
US7011466B2
Mar 14, 2006
Writing implement
MITSUBISHI PENCIL KABUSHIKIKAI
5 citations
60
MITSUBISHI PENCIL CO
1 patent
US5580374A
Dec 3, 1996
Aqueous ink composition for ball point pen
MITSUBISHI PENCIL CO
22 citations
90