Inventor

Mitsuhito Sakaguchi

Inventor

Tokyo, JP

Overview

6→

Patents

1976–2004

Patent span

Physics

Primary field (CPC G)

Patents· 6 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus15%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein15%

G06FElectric digital data processing15%

B82YSpecific uses or applications of nanostructures8%

G06VImage or video recognition or understanding8%

G11BInformation storage based on relative movement between record carrier and transducer8%

G11CStatic stores8%

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

H04NPictorial communication, e.g. television8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

PatentTitleYear

6,834,027'Surface plasmon-enhanced read/write heads for optical data storage media'2004 4,686,678'Semiconductor laser apparatus with isolator'1987 4,327,971'Electro-optical light modulators, light wavelength multiplex signal transmitting apparatus and light wavelength separating switches utilizing the same'1982 4,270,149'Laser beam facsimile apparatus'1981 RE029461'Hologram graphic data tablet apparatus using a vernier'1977 3,949,235'Large holographic memory with plural overlapping detector arrays'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to NIPPON TELEGRAPH & TELEPHONE (1)· patent assignee history

1976–1987Based in Tokyo, JP· patent location history

1981–1982Patents assigned to NIPPON ELECTRIC CO (2)· patent assignee history

1987Patents assigned to NEC CORP (1)· patent assignee history

2004Patents assigned to NEC LAB AMERICA INC (1)· patent assignee history

2004Based in Princeton, NJ, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIPPON ELECTRIC CO	2	1981–1982
NEC CORP	1	1987
NEC LAB AMERICA INC	1	2004
NIPPON TELEGRAPH & TELEPHONE	1	1976

Locations

Location	Patents	Span
Tokyo, JP	5	1976–1987
Princeton, New Jersey, US	1	2004