LexDanaLexDanabeta
Inventor

Kosaku Murata

Inventor
Kobe, JP

Overview

4→
Patents
1979–2004
Patent span
Electricity
Primary field (CPC H)

Patents· 4 as inventor

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

H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers50%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds13%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them13%
G10KSound-producing devices13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
6,739,424'Speaker system'20045,025,474'Speaker system with image projection screen'19914,273,900'Diaphragm for acoustic equipment'19814,173,701'Speaker diaphragm molded from poly-biphenol phthalate type resin film'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–2004Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (4)· patent assignee history
1979–1991Based in Kobe, JP· patent location history
2004Based in Hyogo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD41979–2004
Locations
LocationPatentsSpan
Kobe, JP31979–1991
Hyogo, JP12004