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Inventor

Kohei Katayama

Inventor
Wakayama, JP

Overview

5→
Patents
1988–2019
Patent span
Physics
Primary field (CPC G)

Patents· 5 as inventor

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

G03Gprimary
G03GElectrography50%
B41JTypewriters13%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds13%
H01CResistors13%
Y10TTechnical subjects covered by former us classification13%
PatentTitleYear
10,345,728Toner for electrophotography201910,061,217Electrophotography toner20189,470,991'Method for producing positively chargeable toner'20168,221,949'Toner'20124,782,202'Method and apparatus for resistance adjustment of thick film thermal print heads'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988Patents assigned to MITSUBISHI ELECTRIC CORP (1)· patent assignee history
1988Based in Hyogo, JP· patent location history
2012–2019Patents assigned to KAO CORP (4)· patent assignee history
2012Patents assigned to EIDA AKIHIRO (1)· patent assignee history
2012Patents assigned to KATAYAMA KOHEI (1)· patent assignee history
2012Patents assigned to SHIRAI EIJI (1)· patent assignee history
2012–2019Based in Wakayama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KAO CORP42012–2019
EIDA AKIHIRO12012
KATAYAMA KOHEIself12012
MITSUBISHI ELECTRIC CORP11988
SHIRAI EIJI12012
Locations
LocationPatentsSpan
Wakayama, JP42012–2019
Hyogo, JP11988