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Inventor

Tadashi Umehara

Inventor
Niigata, JP

Overview

4→
Patents
1990–1997
Patent span
General tagging of new technological developments
Primary field (CPC Y)

Patents· 4 as inventor

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

G03Gprimary
G03GElectrography33%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests33%
B05BSpraying apparatus11%
B05DProcesses for applying fluent materials to surfaces, in general11%
Y10TTechnical subjects covered by former us classification11%
PatentTitleYear
5,665,502'Electrophotographic photoreceptor and method for producing the photoreceptor'19975,536,607'Image correcting method using an electrophotographic photoreceptor'19965,292,607'Electrophotographic photoreceptor containing polycarbonate resin as a binder and method for preparation thereof'19944,972,569'Method for rotatingly transferring hollow cylindrical articles'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990–1996Patents assigned to MITSUBISHI CHEM IND (3)· patent assignee history
1990Based in Yokohama, JP· patent location history
1994Based in Odawara, JP· patent location history
1996–1997Patents assigned to SHARP KK (2)· patent assignee history
1996–1997Based in Niigata, JP· patent location history
1997Patents assigned to MITSUBHISHI KASEI CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MITSUBISHI CHEM IND31990–1996
SHARP KK21996–1997
MITSUBHISHI KASEI CORP11997
Locations
LocationPatentsSpan
Niigata, JP21996–1997
Odawara, JP11994
Yokohama, JP11990