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Inventor

Kotaro Hagiwara

Inventor
Yokohama, JP

Overview

4→
Patents
1981–2021
Patent span
Performing operations
Primary field (CPC B)

Patents· 4 as inventor

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

B21Bprimary
B21BRolling of metal20%
B22FWorking metallic powder20%
C22CAlloys20%
G03GElectrography20%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes20%
PatentTitleYear
10,935,904Image forming apparatus202110,013,696Identification information supervising method, portal information providing apparatus, and IC card20184,753,678'Sintered hard metal having superior toughness'19884,274,185'Roll assembly for use in rolling a wire rod'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1988Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (2)· patent assignee history
1981Based in Takarazuka, JP· patent location history
1988Based in Hyogo, JP· patent location history
2018Patents assigned to GOISHI SHINYA (1)· patent assignee history
2018Patents assigned to HAGIWARA KOTARO (1)· patent assignee history
2018Patents assigned to HAYAASHI HIROFUMI (1)· patent assignee history
2018Based in Tokyo, JP· patent location history
2021Patents assigned to CANON KK (1)· patent assignee history
2021Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SUMITOMO ELECTRIC INDUSTRIES21981–1988
CANON KK12021
GOISHI SHINYA12018
HAGIWARA KOTAROself12018
HAYAASHI HIROFUMI12018
Locations
LocationPatentsSpan
Yokohama, JP12021
Tokyo, JP12018
Hyogo, JP11988
Takarazuka, JP11981