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Inventor

Masafumi Okuma

Inventor
Tokyo, JP

Overview

5→
Patents
2004–2015
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 5 as inventor

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

F16Cprimary
F16CShafts25%
A61KPreparations for medical, dental or toiletry purposes17%
B29CShaping or joining of plastics17%
G02BOptical elements, systems or apparatus17%
H02KDynamo-electric machines17%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
8,931,175'Fluid dynamic bearing device'20158,002,471'Fluid dynamic bearing apparatus and a motor using the same'20117,819,585'Fluid dynamic bearing apparatus and a motor using the same'20106,869,228'Ferrule and metallic die assembly for making the same'20056,832,857'Plastic optical fiber ferrule'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2005Patents assigned to ACT ONE KK (2)· patent assignee history
2004–2005Based in Saitama, JP· patent location history
2010–2015Patents assigned to NTN TOYO BEARING CO LTD (3)· patent assignee history
2010–2015Based in Tokyo, JP· patent location history
2015Patents assigned to KOMORI ISAO (1)· patent assignee history
2015Patents assigned to MITANI KENICHI (1)· patent assignee history
2015Patents assigned to MIZUTANI TOSHIYUKI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NTN TOYO BEARING CO LTD32010–2015
ACT ONE KK22004–2005
KOMORI ISAO12015
MITANI KENICHI12015
MIZUTANI TOSHIYUKI12015
Locations
LocationPatentsSpan
Tokyo, JP32010–2015
Saitama, JP22004–2005