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Inventor

Osamu Moriwaki

Inventor
Zama, JP

Overview

7→
Patents
2007–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 7 as inventor

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

H04Qprimary
H04QSelecting31%
H04JMultiplex communication25%
G02BOptical elements, systems or apparatus19%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein13%
G05FSystems for regulating electric or magnetic variables6%
H04LTransmission of digital information, e.g. telegraphic communication6%
PatentTitleYear
11,112,561Variable wavelength filter202110,254,625Optical signal processing device20198,890,503'Step-down power supply circuit'20148,244,133'Optical waveband demultiplexer, optical waveband multiplexer, and optical waveband selective switch'20127,522,837'Optical communication system'20097,317,875'Optical communication network system, wavelength routing apparatus, communication node, optical path managing method for use in optical cross connect apparatus, and apparatus for that method'20087,298,974'Optical communication network system'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007–2021Patents assigned to NIPPON TELEGRAPH & TELEPHONE (6)· patent assignee history
2007–2009Based in Zama, JP· patent location history
2012Patents assigned to HASEGAWA HIROSHI (1)· patent assignee history
2012Patents assigned to KAKEHASHI SHOJI (1)· patent assignee history
2012Patents assigned to KAMEI SHIN (1)· patent assignee history
2012–2021Based in Musashino, JP· patent location history
2014Patents assigned to FUJITSU SEMICONDUCTOR LTD (1)· patent assignee history
2014Based in Yokohama, JP· patent location history
2019Based in Atsugi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NIPPON TELEGRAPH & TELEPHONE62007–2021
FUJITSU SEMICONDUCTOR LTD12014
HASEGAWA HIROSHI12012
KAKEHASHI SHOJI12012
KAMEI SHIN12012
Locations
LocationPatentsSpan
Zama, JP32007–2009
Musashino, JP22012–2021
Atsugi, JP12019
Yokohama, JP12014