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Inventor

Fumihiro Sogawa

Inventor
Osaka, JP

Overview

3→
Patents
1992–1994
Patent span
Electricity
Primary field (CPC H)

Patents· 3 as inventor

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

H01Sprimary
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light67%
G11BInformation storage based on relative movement between record carrier and transducer33%
PatentTitleYear
5,301,059'Short-wavelength light generating apparatus'19945,274,657'Phase lock type semiconductor laser'19935,161,148'Optical pick-up using wavelength guide with grating coupler therein'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1994Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (3)· patent assignee history
1992–1993Based in Osaka, JP· patent location history
1994Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD31992–1994
Locations
LocationPatentsSpan
Osaka, JP21992–1993
Tokyo, JP11994