Inventor

Naohiro Shimada

Inventor

Tokyo, JP

Overview

24→

Patents

1987–2010

Patent span

Electricity

Primary field (CPC H)

Patents· 24 as inventor

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

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication28%

H04JMultiplex communication25%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light15%

H04QSelecting13%

H04MTelephonic communication8%

LOC268%

B82YSpecific uses or applications of nanostructures3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

PatentTitleYear

7,672,237'Node capable of saving a third-layer operation'2010 7,664,874'Node capable of saving a third-layer operation'2010 6,957,271'Node capable of saving a third layer packet handling operation in a synchronous optical network'2005 6,804,268'Method and apparatus for multi-access transmission'2004 6,690,649'QoS management apparatus'2004 D0485376'Light emitting device'2004 6,647,014'Distributed network node'2003 6,557,112'QOS protection system'2003 6,483,809'High speed transfer of failure information in an ATM network'2002 D0456534'Light emitting device'2002 D0454966'Light emitting device'2002 6,292,502'Multiple quantum well semiconductor laser diode and DVD system using the same'2001 6,247,051'High speed transfer of failure information in an ATM network'2001 6,144,642'Signal transfer device in a telecommunications network'2000 6,101,167'Path switching system'2000 5,511,077'Frame transmission system'1996 5,434,858'Virtual tributary path idle insertion using timeslot interchange'1995 5,289,487'Semiconductor laser device having uniform and reproducible laser characteristics'1994 5,187,704'Monitoring method for stand-by circuits suitable for a multiplexing/demultiplexing apparatus'1993 5,157,682'Integrated semiconductor laser device'1992 4,982,409'Semiconductor laser device'1991 4,949,339'Multiplexer apparatus adaptable for two kinds of transmission rates'1990 4,799,228'Transverse-mode stabilized semiconductor laser diode with slab-coupled waveguide'1989 4,691,321'Semiconductor laser device having current confining and built-in waveguide structure'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2004Patents assigned to TOSHIBA KK (9)· patent assignee history

1987Based in Yokohama, JP· patent location history

1989Based in Yokahama, JP· patent location history

1990–2010Patents assigned to NEC CORP (15)· patent assignee history

1990–2010Based in Tokyo, JP· patent location history

1991–1994Based in Kawasaki, JP· patent location history

2001–2004Based in Yokosuka, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NEC CORP	15	1990–2010
TOSHIBA KK	9	1987–2004

Locations

Location	Patents	Span
Tokyo, JP	15	1990–2010
Yokosuka, JP	4	2001–2004
Kawasaki, JP	3	1991–1994
Yokahama, JP	1	1989
Yokohama, JP	1	1987