Inventor

Sadao Fujita

Inventor

Tokyo, JP

Overview

10→

Patents

1986–2020

Patent span

Electricity

Primary field (CPC H)

Patents· 10 as inventor

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

H04Bprimary

H04BTransmission25%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein19%

G03GElectrography13%

H04NPictorial communication, e.g. television13%

C21DModifying the physical structure of ferrous metals6%

F27BFurnaces, kilns, ovens or retorts in general6%

F27DDetails or accessories of furnaces, kilns, ovens or retorts, in so far as they are of kinds occurring in more than one kind of furnace6%

H04JMultiplex communication6%

H04QSelecting6%

PatentTitleYear

10,587,346Optical transmitter and method of controlling the same2020 10,191,307Optical transmission device and control method therefor2019 9,166,697'Optical transmitter and method for controlling the same'2015 8,554,093'Image forming apparatus that adopts image density control with density sensors'2013 8,315,437'Image processor, control method therefor, image forming apparatus, and program'2012 8,218,989'Image forming apparatus that transfers toner image carried by image carrier onto sheet, density control method therefor, and storage medium'2012 8,027,062'Image forming apparatus'2011 6,570,685'Node for optical communication and wavelength-division multiplexing transmission apparatus having a ring structure composed of the same nodes'2003 4,700,352'FSK laser transmitting apparatus'1987 4,600,378'Steel strip heating furnace and method'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986Patents assigned to KAWASAKI STEEL CO (1)· patent assignee history

1986Based in Chiba, JP· patent location history

1987–2020Patents assigned to NEC CORP (5)· patent assignee history

1987–2020Based in Tokyo, JP· patent location history

2011–2013Patents assigned to CANON KK (4)· patent assignee history

2012–2015Patents assigned to FUJITA SADAO (4)· patent assignee history

2015Patents assigned to FUKUCHI KIYOSHI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NEC CORP	5	1987–2020
CANON KK	4	2011–2013
FUJITA SADAOself	4	2012–2015
FUKUCHI KIYOSHI	1	2015
KAWASAKI STEEL CO	1	1986

Locations

Location	Patents	Span
Tokyo, JP	9	1987–2020
Chiba, JP	1	1986