Inventor

Ihei Kajiya

Inventor

Ebina, JP

Overview

2→

Patents

1991–1994

Patent span

Electricity

Primary field (CPC H)

Patents· 2 as inventor

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

H04Lprimary

H04LTransmission of digital information, e.g. telegraphic communication50%

H04JMultiplex communication25%

Y04SSystems integrating technologies related to power network operation, communication or information technologies for improving the electrical power generation, transmission, distribution, management or usage, i.e. smart grids25%

PatentTitleYear

5,327,425'Network synchronization control system and control method'1994 4,984,233'Method and apparatus for testing station address in network'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1994Patents assigned to HITACHI LTD (2)· patent assignee history

1991–1994Patents assigned to HITACHI SOFTWARE ENG (2)· patent assignee history

1991Based in Hadano, JP· patent location history

1994Patents assigned to HITACHI COMPUTER ENG (1)· patent assignee history

1994Based in Ebina, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	2	1991–1994
HITACHI SOFTWARE ENG	2	1991–1994
HITACHI COMPUTER ENG	1	1994

Locations

Location	Patents	Span
Ebina, JP	1	1994
Hadano, JP	1	1991