Inventor

Satoshi Kumayasu

Inventor

Tokyo, JP

Overview

5→

Patents

2003–2006

Patent span

Electricity

Primary field (CPC H)

Patents· 5 as inventor

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

H04Bprimary

H04BTransmission60%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein20%

H04QSelecting20%

PatentTitleYear

7,058,305'Optical submarine communication system and surge suppressing apparatus of the optical submarine communication system'2006 6,934,434'Circuit for switching optical paths'2005 6,792,192'Optical variable attenuator'2004 6,714,394'Electric power feeding line switching method, electric power feeding line switching apparatus and electric power feeding line switching system'2004 6,563,236'Feed line switching circuit and branching unit'2003

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2003–2006Patents assigned to MITSUBISHI ELECTRIC CORP (5)· patent assignee history

2003Patents assigned to KDDI SUBMARINE CABLE SYS INC (1)· patent assignee history

2003–2006Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUBISHI ELECTRIC CORP	5	2003–2006
KDDI SUBMARINE CABLE SYS INC	1	2003

Locations

Location	Patents	Span
Tokyo, JP	5	2003–2006