Inventor

Shigehiko Yazawa

Inventor

Kawasaki, JP

Overview

1991–2006

Patent span

Electricity

Primary field (CPC H)

Patents· 11 as inventor

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

H04Mprimary

H04MTelephonic communication38%

H04QSelecting31%

H04WWireless communication networks19%

H04LTransmission of digital information, e.g. telegraphic communication13%

PatentTitleYear

7,023,964'Communication system'2006 6,798,872'Caller information display system and recording medium'2004 6,035,195'Mobile radio telephone for emitting position information indicating an assigned zone'2000 5,802,475'Mobile radio telephone apparatus'1998 5,555,541'Exchange connected to a control channel junction line'1996 5,524,045'Cordless telephone terminal controlling system'1996 5,319,640'Transmitting/receiving system having digital switching network'1994 5,315,588'Method of controlling frame-relay module, and high-speed switching system'1994 5,195,129'Switching system for application services'1993 5,142,571'Digital telephone set having an emergency switching function and communication system having the same'1992 5,008,884'Private automatic branch exchange system with line accessing number adding feature'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–2006Patents assigned to FUJITSU LTD (11)· patent assignee history

1991–2004Based in Kawasaki, JP· patent location history

2006Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJITSU LTD	11	1991–2006

Locations

Location	Patents	Span
Kawasaki, JP	10	1991–2004
Tokyo, JP	1	2006