Inventor

Haruhito Shimizu

Inventor

Tokyo, JP

Overview

9→

Patents

1988–1999

Patent span

Physics

Primary field (CPC G)

Patents· 9 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus23%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein23%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light23%

H04BTransmission15%

G05DSystems for controlling or regulating non-electric variables8%

H10NElectric solid-state devices not otherwise provided for8%

PatentTitleYear

5,960,142'Peltier cooler and semiconductor laser module using Peltier cooler'1999 5,706,302'Temperature control type semiconductor laser device'1998 5,684,632'Variable wavelength optical filter'1997 5,603,570'Constant-temperature control using surroundings temperature of a device'1997 5,307,197'Optical circuit for a polarization diversity receiver'1994 5,007,693'Method for controlling polarizations of signal lights in an optical frequency division multiplex coherent communication system'1991 5,004,312'Method for controlling a polarization of light'1991 4,898,441'Polarization controller'1990 4,752,120'Polarization controlling device comprising a beam splitter for controllably bifurcating an input polarized beam to two polarization controlling elements'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1999Patents assigned to NEC CORP (9)· patent assignee history

1988–1999Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NEC CORP	9	1988–1999

Locations

Location	Patents	Span
Tokyo, JP	9	1988–1999