Inventor

Tsutomu Okamoto

Inventor
Kanagawa, JP

Overview

20→
Patents
1980–2018
Patent span
Physics
Primary field (CPC G)

Patents· 20 as inventor

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

C30Bprimary
C30BSingle-crystal growth16%
LOC1316%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%
H01FMagnets6%
A61KPreparations for medical, dental or toiletry purposes3%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations3%
B31BMaking containers of paper, cardboard or material worked in a manner analogous to paper3%
B41FPrinting machines or presses3%
B41PIndexing scheme relating to printing, lining machines, typewriters, and to stamps3%
C22CAlloys3%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2001Patents assigned to SONY CORP (10)· patent assignee history
1980–1987Based in Yokohama, JP· patent location history
1989–2001Based in Kanagawa, JP· patent location history
1999Patents assigned to HANKOOK TIRE MFG CO LTD (1)· patent assignee history
2006–2018Patents assigned to ISHIDA SEISAKUSHO (2)· patent assignee history
2006–2018Based in Ritto, JP· patent location history
2015Patents assigned to ISOWA KK (1)· patent assignee history
2015Based in Kasugai, JP· patent location history
2017–2018Patents assigned to ADAMANT CO LTD (5)· patent assignee history
2017–2018Based in Kawaguchi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SONY CORP101980–2001
ADAMANT CO LTD52017–2018
ISHIDA SEISAKUSHO22006–2018
HANKOOK TIRE MFG CO LTD11999
ISOWA KK12015
Locations
LocationPatentsSpan
Kanagawa, JP71989–2001
Kawaguchi, JP52017–2018
Yokohama, JP31980–1987
Ritto, JP22006–2018
Kasugai, JP12015