Inventor

Isaku Komuro

Inventor

Kokubunji, JP

Overview

1985–2003

Patent span

Electricity

Primary field (CPC H)

Patents· 13 as inventor

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

H04Mprimary

H04MTelephonic communication59%

H04QSelecting32%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

PatentTitleYear

6,633,631'Digital key telephone system and extension terminal device thereof'2003 6,496,576'Digital key telephone system and extension terminal device thereof'2002 6,456,705'Digital key telephone system and extension terminal device thereof'2002 6,408,060'Digital key telephone system and extension terminal device thereof'2002 6,377,671'Digital key telephone system and extension terminal device thereof'2002 6,373,924'Digital key telephone system and extension terminal device thereof'2002 6,263,061'Digital button telephone system and extension terminal for the same'2001 6,118,863'Exchanging apparatus and control method for exchanging and connecting destination terminal and calling terminal, and communication terminal apparatus communicating with other terminals through communication network and control method'2000 5,513,256'Key telephone system'1996 5,224,159'Key telephone system provided with telephone sets connectable to add-on modules'1993 4,650,932'Key telephone system'1987 4,605,825'Function key assignments in a key telephone system'1986 4,559,417'Method of setting operating data in a key telephone system'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2001Patents assigned to TOKYO SHIBAURA ELECTRIC CO (3)· patent assignee history

1985–1987Based in Higashiyamato, JP· patent location history

1986–2000Based in Tokyo, JP· patent location history

1987–2003Patents assigned to TOSHIBA KK (10)· patent assignee history

1993–2003Based in Kokubunji, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOSHIBA KK	10	1987–2003
TOKYO SHIBAURA ELECTRIC CO	3	1985–2001

Locations

Location	Patents	Span
Kokubunji, JP	9	1993–2003
Tokyo, JP	2	1986–2000
Higashiyamato, JP	2	1985–1987