Inventor · disambiguated record
Fumihiro Ikawa
Also filed as: IKAWA FUMIHIRO
7 granted patents·154 citations·filing 1991–1998
87Inventor score
Files withFUJITSU LTD7
Top patents by PatentIndex Score
7 records- 0167US5757769ALine switching control system in synchronous communication network systemFUJITSU LTD·Filed 1995·Granted May 26, 1998·34 cites·10 claims
- 0259US6141320AMethod and apparatus for nested automatic protection switchingFUJITSU LTD·Filed 1997·Granted Oct 31, 2000·24 cites·8 claims
- 0358US5978354AOptical transmission system and transmission line switching control methodFUJITSU LTD·Filed 1996·Granted Nov 2, 1999·48 cites·7 claims
- 0451US6614753B2Terminal apparatus, device for detecting the mismatching of work/protection line bridging function in a synchronous communication network and the methodFUJITSU LTD·Filed 1998·Granted Sep 2, 2003·17 cites·12 claims
- 0545US5091796AOptical communication system having an improved protection line switching mechanismFUJITSU LTD·Filed 1991·Granted Feb 25, 1992·16 cites·24 claims
- 0638US5073774AOne-to-one switching systemFUJITSU LTD·Filed 1991·Granted Dec 17, 1991·11 cites·10 claims
- 0731US6147783AOptical transmission system wherein protection terminal equipment converts alarm indication signal before relaying same to working terminal equipmentFUJITSU LTD·Filed 1995·Granted Nov 14, 2000·4 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →