Inventor

Yumiko Nishi

Inventor
Tokyo, JP

Overview

5→
Patents
1991–2010
Patent span
Electricity
Primary field (CPC H)

Patents· 5 as inventor

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

H04Mprimary
H04MTelephonic communication40%
H04QSelecting40%
H04JMultiplex communication10%
H04LTransmission of digital information, e.g. telegraphic communication10%

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2010Patents assigned to HITACHI LTD (5)· patent assignee history
1991Patents assigned to HITACHI COMMUNICATION SYSTEM (1)· patent assignee history
1991–2010Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HITACHI LTD51991–2010
HITACHI COMMUNICATION SYSTEM11991
Locations
LocationPatentsSpan
Tokyo, JP51991–2010