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Inventor

Shigeru Okumura

Inventor
Yokohama, JP

Overview

4→
Patents
1996–2006
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B43Kprimary
B43KImplements for writing or drawing60%
C09DCoating compositions, e.g. paints, varnishes or lacquers40%
PatentTitleYear
7,083,349'Writing implement'20067,070,352'Writing implement'20067,011,466'Writing implement'20065,580,374'Aqueous ink composition for ball point pen'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996Patents assigned to MITSUBISHI PENCIL CO (1)· patent assignee history
1996–2006Based in Yokohama, JP· patent location history
2006Patents assigned to MITSUBISHI PENCIL KABUSHIKIKAI (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI PENCIL KABUSHIKIKAI32006
MITSUBISHI PENCIL CO11996
Locations
LocationPatentsSpan
Yokohama, JP41996–2006