Company Filing History:

8 out of 42,485

Hitachi, Ltd.

patents

1 out of 129

Hitachi Communication Technologies, Ltd.

patents

Years Active: 2008-2012

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9 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 8290369 - Optical access system (2012-10-16),

2. 8260135 - Passive optical network system and wavelength assignment method (2012-09-04),

3. 8184977 - Optical line terminal capable of active bandwidth allocation for passive optical network system (2012-05-22),

4. 8184975 - Passive optical network system and optical line terminator (2012-05-22),

5. 7889990 - Optical line terminal capable of active bandwidth allocation for passive optical network system (2011-02-15),

6. 7873277 - Passive optical network system and wavelength assignment method (2011-01-18),

7. 7840137 - Optical line terminal and optical network unit capable of alarm transmission scheme for passive optical network system (2010-11-23),

8. 7773880 - Optical access system (2010-08-10),

9. 7369768 - Optical access system (2008-05-06),

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For the Inventor, By the Inventor

Ryosuke Nishino

Company Filing History:

Years Active: 2008-2012