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Inventor

Hiromi Demizu

Inventor
Yokohama, JP

Overview

7→
Patents
1978–1992
Patent span
Physics
Primary field (CPC G)

Patents· 7 as inventor

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

G03Gprimary
G03GElectrography100%
PatentTitleYear
5,155,533'Bias application control device for image forming equipment'19924,930,438'Developing device using a single component developer'19904,760,422'Developing device using single component toner'19884,696,255'Developing apparatus'19874,521,502'Color recording method'19854,119,060'Toner charging apparatus'19784,100,884'Rubber developer roller using single component toner'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–1992Patents assigned to RICOH KK (6)· patent assignee history
1978–1992Based in Yokohama, JP· patent location history
1990Patents assigned to DEMIZU HIROMI (1)· patent assignee history
1990Patents assigned to OBU MAKOTO (1)· patent assignee history
1990Patents assigned to SEIMIYA RYUBUN (1)· patent assignee history
1990Patents assigned to TARUMI NORIYOSHI (1)· patent assignee history
1990Based in Kanagawa, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RICOH KK61978–1992
DEMIZU HIROMIself11990
OBU MAKOTO11990
SEIMIYA RYUBUN11990
TARUMI NORIYOSHI11990
Locations
LocationPatentsSpan
Yokohama, JP61978–1992
Kanagawa, JP11990