HITACHI COMMUNICATION TECHNOLOGIES, LTD.
Patent Owner
Stats
- 4 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- May 10, 2011 most recent publication
Details
- 4 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 1,121 Total Citation Count
- Mar 31, 1989 Earliest Filing
- 38 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
Matters
Rank in Class
Top Patents (by citation)
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Recent Publications
- No Recent Publications to Display
Recent Patents
Patent #
Title
Filing Date
Issue Date
Intl Class
5515196 Optical intensity and phase modulators in an optical transmitter apparatusApr 02, 93May 07, 96[H04B]
Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
7453854 Radio signal communication method, base station and terminal stationExpiredMay 18, 04Nov 18, 08[H04B]
2007/0195,804 PPP GATEWAY APPARATUS FOR CONNECTING PPP CLIENTS TO L2SWAbandonedNov 15, 06Aug 23, 07[H04L]
2007/0086,384 Method of setting up quality of service in wireless communication network and wireless communication apparatusAbandonedSep 06, 06Apr 19, 07[H04Q]
2007/0065,089 Optical termination apparatus and optical transmission systemAbandonedAug 15, 06Mar 22, 07[G02B]
2006/0239,855 Reflow soldering method using Pb-free solder alloy and hybrid packaging method and structureAbandonedJul 01, 04Oct 26, 06[C22C]
2006/0092,941 Communication path monitoring system and communication network systemAbandonedJul 07, 05May 04, 06[H04L]
2006/0050,643 Router for multicast redundant routing and system for multicast redundancyAbandonedJul 15, 05Mar 09, 06[H04L]
2005/0157,722 Access user management system and access user management apparatusAbandonedJul 20, 04Jul 21, 05[H04L]
2005/0128,946 Network statistics information service system and internet access serverAbandonedJul 26, 04Jun 16, 05[H04L]
6862290 Line switching system and line switching unit of dynamic band variation unitExpiredMay 06, 99Mar 01, 05[H04L]
2005/0036,788 Optical network system construction method and support systemAbandonedJun 01, 04Feb 17, 05[H04J]
2004/0264,421 Cell station, radio communication system, communication control method of cell station, and method of building radio communication networkAbandonedJan 08, 04Dec 30, 04[H04J]
2004/0246,991 IP address translator and packet transfer apparatusAbandonedAug 22, 03Dec 09, 04[H04J]
Top Inventors for This Owner
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