Inventor

Katsuhiko Kurumada

Inventor

Tokyo, JP

Overview

9→

Patents

1982–2006

Patent span

Electricity

Primary field (CPC H)

Patents· 9 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus31%

H10DInorganic electric semiconductor devices23%

G01DMeasuring not specially adapted for a specific variable8%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein8%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light8%

H02KDynamo-electric machines8%

H04QSelecting8%

H10NElectric solid-state devices not otherwise provided for8%

PatentTitleYear

7,092,593'Microactuator device and optical switching system using the same'2006 7,082,251'Optical device'2006 7,010,200'Light-beam switching/adjusting apparatus and manufacturing method thereof'2006 7,006,722'Waveguide type optical device and position detecting method'2006 6,954,562'Matrix switch of optical waveguide type and method for manufacturing the same'2005 5,155,737'Semiconductor wavelength conversion device'1992 4,463,366'Field effect transistor with combination Schottky-junction gate'1984 4,331,967'Field effects semiconductor devices'1982 4,327,475'Method of manufacturing a FET device disposed in a compound s/c layer on a semi-insulating substrate'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1992Patents assigned to NIPPON TELEGRAPH & TELEPHONE (4)· patent assignee history

1982–2006Based in Tokyo, JP· patent location history

1992Based in Ebina, JP· patent location history

2005–2006Patents assigned to NTT ELECTRONICS CORP (3)· patent assignee history

2005–2006Based in Kanagawa, JP· patent location history

2006Patents assigned to NIKON CORP (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON TELEGRAPH & TELEPHONE	4	1982–1992
NTT ELECTRONICS CORP	3	2005–2006
NIKON CORP	2	2006

Locations

Location	Patents	Span
Tokyo, JP	6	1982–2006
Kanagawa, JP	2	2005–2006
Ebina, JP	1	1992