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Inventor

Kazumi Hatakeyama

Inventor
Tokyo, JP

Overview

2→
Patents
1979–2019
Patent span
Physics
Primary field (CPC G)

Patents· 2 as inventor

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

F01Cprimary
F01CRotary-piston or oscillating-piston machines or engines14%
G06FElectric digital data processing14%
G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes14%
H04LTransmission of digital information, e.g. telegraphic communication14%
H04MTelephonic communication14%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%
Y10TTechnical subjects covered by former us classification14%
PatentTitleYear
10,382,612Business support system, business support method, information processing apparatus, communication device, and control methods and control programs of information processing apparatus and communication device20194,132,419'Oil seal ring for rotary piston engines'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979Patents assigned to TOYO KOGYO CO (1)· patent assignee history
1979Based in Hiroshima, JP· patent location history
2019Patents assigned to NEC CORP (1)· patent assignee history
2019Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
NEC CORP12019
TOYO KOGYO CO11979
Locations
LocationPatentsSpan
Tokyo, JP12019
Hiroshima, JP11979