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Inventor

Ryoji Sakamoto

Inventor
Yokohama, JP

Overview

4→
Patents
1997–2003
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.

G02Bprimary
G02BOptical elements, systems or apparatus33%
H10DInorganic electric semiconductor devices33%
H05KPrinted circuits17%
Y02PClimate change mitigation technologies in the production or processing of goods17%
PatentTitleYear
6,555,850'Field-effect transistor'20036,333,523'Field-effect transistor'20015,742,480'Optical module circuit board having flexible structure'19985,596,665'Optical module having structure for defining fixing position of sleeve'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2003Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (4)· patent assignee history
1997–2003Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO ELECTRIC INDUSTRIES41997–2003
Locations
LocationPatentsSpan
Yokohama, JP41997–2003