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Inventor

Shumi Kumagai

Inventor
Tokyo, JP

Overview

2→
Patents
1982–2007
Patent span
Electricity
Primary field (CPC H)

Patents· 2 as inventor

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

H01Cprimary
H01CResistors25%
H01FMagnets25%
H03HImpedance networks, e.g. resonant circuits25%
H04NPictorial communication, e.g. television25%
PatentTitleYear
7,277,270'Multilayer filter'20074,342,051'Method of and system for reproducing or transmitting half-tone images'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (1)· patent assignee history
1982Based in Kawasaki, JP· patent location history
2007Patents assigned to TDK CORP (1)· patent assignee history
2007Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11982
TDK CORP12007
Locations
LocationPatentsSpan
Tokyo, JP12007
Kawasaki, JP11982