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Inventor

Harunori Yoshikawa

Inventor
Cupertino, CA, US

Overview

3→
Patents
1977–1990
Patent span
Electricity
Primary field (CPC H)

Patents· 3 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 communication33%
Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use33%
B41JTypewriters17%
G06KGraphical data reading17%
PatentTitleYear
4,924,456'High speed modem'19904,771,417'High speed modem'19884,058,195'Increment-decrement logic for serial printer'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977Patents assigned to XEROX CORP (1)· patent assignee history
1977Based in San Jose, CA, US· patent location history
1988–1990Patents assigned to RACAL DATA COMMUNICATIONS INC (2)· patent assignee history
1988–1990Based in Cupertino, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
RACAL DATA COMMUNICATIONS INC21988–1990
XEROX CORP11977
Locations
LocationPatentsSpan
Cupertino, California, US21988–1990
San Jose, California, US11977