Inventor

Keiko Takahara

Inventor

Kawasaki, JP

Overview

1995–2011

Patent span

Electricity

Primary field (CPC H)

Patents· 16 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%

H04MTelephonic communication28%

H04QSelecting28%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes5%

H04NPictorial communication, e.g. television5%

H04JMultiplex communication3%

PatentTitleYear

7,920,550'Voice communication system and voice communication method'2011 7,808,976'Voice communication system and voice communication method'2010 7,756,117'Voice communication system and voice communication method'2010 7,738,447'Voice communication system and voice communication method'2010 7,724,729'Voice communication system and voice communication method'2010 7,724,730'Voice communication system and voice communication method'2010 7,502,363'Voice communication system and voice communication method'2009 7,167,467'Voice communication system and voice communication method'2007 6,240,085'Voice communication system and voice communication method'2001 6,078,583'Communication method and communication system'2000 5,905,495'Communication system using electronic mail'1999 5,856,825'Image voice synchronized multimedia mail system and method thereof'1999 5,832,217'Communication system distributing packets according to commands acquired form packets and filtering real time requests from the accepted requests and processing the realtime requests selected by the filter'1998 5,604,737'Voice communication system and voice communication method'1997 5,528,284'Video communication method having refresh function of coding sequence and terminal devices thereof'1996 5,477,542'Method and appartus for controlling multimedia information communication'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2011Patents assigned to HITACHI LTD (16)· patent assignee history

1995–1996Based in Machida, JP· patent location history

1997–2011Based in Kawasaki, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	16	1995–2011

Locations

Location	Patents	Span
Kawasaki, JP	14	1997–2011
Machida, JP	2	1995–1996