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Inventor

Hiroyuki Ohkaji

Inventor
Yokohama, JP

Overview

8→
Patents
1991–2005
Patent span
Physics
Primary field (CPC G)

Patents· 8 as inventor

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

G03Gprimary
G03GElectrography89%
H04NPictorial communication, e.g. television11%
PatentTitleYear
6,898,383'Image forming apparatus'20056,628,903'Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper'20036,160,969'Image forming apparatus with a voltage applying unit for image transfer'20006,144,811'Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper'20006,085,062'Electrophotographic image forming apparatus'20005,719,684'Image forming apparatus having an endless conveying and transferring belt with an interrupt control'19985,189,479'Image transferring device for a color image recorder'19934,984,024'Image transfer unit for image recording apparatus'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2005Patents assigned to RICOH KK (8)· patent assignee history
1991–2005Based in Yokohama, JP· patent location history
2000Based in Kanagawa, JP· patent location history
2000Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK81991–2005
Locations
LocationPatentsSpan
Yokohama, JP61991–2005
Kanagawa, JP12000
Tokyo, JP12000