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Inventor

Masahiro Onizuka

Inventor
Akita, JP

Overview

11→
Patents
1985–2002
Patent span
Electricity
Primary field (CPC H)

Patents· 11 as inventor

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

H01Fprimary
H01FMagnets44%
C04BLime, magnesia22%
B23HWorking of metal by the action of a high concentration of electric current on a workpiece using an electrode which takes the place of a tool11%
C01GCompounds containing metals not covered by subclasses c01d or c01f6%
C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds6%
H01BCables6%
H03HImpedance networks, e.g. resonant circuits6%
PatentTitleYear
6,346,673'Noise preventing split ferrite core'20026,268,787'Ferrite-core housing case anti-noise component wire harness and electronic equipment'20016,217,790'BALUN transformer core material, BALUN transformer core and BALUN transformer'20016,147,928'Anti-noise component for flat cable'20006,114,940'BALUN transformer core material, BALUN transformer core and BALUN transformer'20006,033,593'BALUN transformer core material, BALUN transformer core and BALUN transformer'20005,966,065'Core for inductance elements and its production method'19995,954,992'Hexagonal Z type magnetic oxide sintered material, method for making and impedance device'19995,750,045'Preparation of ferrite materials'19984,623,773'Electrospark machining solution'19864,536,633'Dielectric fluid for electrical discharge machining'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1986Patents assigned to MITSUBISHI ELECTRIC CORP (2)· patent assignee history
1985–1986Based in Aichi, JP· patent location history
1998–2002Patents assigned to TDK CORP (9)· patent assignee history
1998Based in Chiba, JP· patent location history
1999–2001Based in Akita, JP· patent location history
2000–2002Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
TDK CORP91998–2002
MITSUBISHI ELECTRIC CORP21985–1986
Locations
LocationPatentsSpan
Akita, JP51999–2001
Tokyo, JP32000–2002
Aichi, JP21985–1986
Chiba, JP11998