Inventor

Shigeru Ohshima

Inventor

Yokohama, JP

Overview

22→

Patents

1980–2006

Patent span

Electricity

Primary field (CPC H)

Patents· 22 as inventor

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

H04Bprimary

H04BTransmission25%

G02BOptical elements, systems or apparatus19%

H04NPictorial communication, e.g. television19%

H04JMultiplex communication16%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light9%

G01BMeasuring length, thickness or similar linear dimensions3%

G01DMeasuring not specially adapted for a specific variable3%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them3%

PatentTitleYear

7,061,948'Wavelength stabilizing apparatus and method of adjusting the same'2006 6,965,739'Optical communication system'2005 6,504,636'Optical communication system'2003 6,417,942'Optical communication system and method of controlling optical communication system'2002 6,040,934'Receptacle-type optical transmission/reception apparatus'2000 5,986,787'Near-infrared communication apparatus'1999 5,979,069'Dial gauge'1999 5,920,414'Wavelength division multiplexing optical transmission apparatus and optical repeater'1999 5,799,118'Integrated optical multiplexer-and-demultiplexer'1998 5,739,943'Polarization control unit'1998 5,483,368'Optical communication system suitable for selective reception of multiple services'1996 5,170,451'Optical WDM (wavelength division multiplex) coupler'1992 5,056,887'Optical mixing device'1991 4,998,256'Semiconductor laser apparatus'1991 4,857,997'Color television camera incorporating a color resolving prism system'1989 4,812,911'Adapter with built-in shutter'1989 4,797,734'Pickup apparatus'1989 4,589,015'Color television camera with bias light device featuring reduced color shading'1986 4,400,055'Optical power distributor and method for manufacturing the same'1983 4,262,305'TV Camera'1981 4,236,177'Beam splitting prism assembly with bias light source'1980 4,216,494'Television camera with bias light'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1989Patents assigned to CANON KK (7)· patent assignee history

1980–1989Based in Tokyo, JP· patent location history

1983Patents assigned to TOKYO SHIBAURA ELECTRIC CO (1)· patent assignee history

1983Based in Funabashi, JP· patent location history

1989–1996Based in Kanagawa, JP· patent location history

1991–2006Patents assigned to TOSHIBA KK (13)· patent assignee history

1991–2006Based in Yokohama, JP· patent location history

1998Patents assigned to KOKUSAI DENSHIN DENWA CO LTD (1)· patent assignee history

1999Patents assigned to MITUTOYO CORP (1)· patent assignee history

1999Based in Kawasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOSHIBA KK	13	1991–2006
CANON KK	7	1980–1989
KOKUSAI DENSHIN DENWA CO LTD	1	1998
MITUTOYO CORP	1	1999
TOKYO SHIBAURA ELECTRIC CO	1	1983

Locations

Location	Patents	Span
Yokohama, JP	12	1991–2006
Tokyo, JP	6	1980–1989
Kanagawa, JP	2	1989–1996
Kawasaki, JP	1	1999
Funabashi, JP	1	1983