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Kiyokazu Otsuka

USPTO Granted Patents = 6

CIPO Patents = 2 (Patent Applications = 1)

Average Co-Inventor Count = 1.5

ph-index = 5

Forward Citations = 138(Granted Patents)

Company Filing History:

6 out of 35,670

Nec Corporation

Years Active: 1996-2005

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6 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6931000 - Internal line control system (2005-08-16),

2. 6571108 - Private branch mobile communication system and method (2003-05-27),

3. 6370393 - Private branch exchange (2002-04-09),

4. 6330448 - Handover arrangement for mobile station moving across the boundary of wireless cell-site stations of adjacent PBXs (2001-12-11),

5. 5670950 - Private communications network system and method of authentication for a (1997-09-23),

6. 5515034 - Simple communication system capable of message broadcasting (1996-05-07),

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