Inventor · disambiguated record
Izumi Sankawa
Also filed as: SANKAWA IZUMI
6 granted patents·177 citations·filing 1992–2004
85Inventor score
Top patents by PatentIndex Score
6 records- 0189US7228040B2Hole-assisted single mode optical fiberNIPPON TELEGRAPH & TELEPHONE·Filed 2004·Granted Jun 5, 2007·48 cites·3 claims
- 0279US5446810AOptical switch, optical fiber arranging member and method of manufacturing the optical fiber arranging memberSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Aug 29, 1995·50 cites·23 claims
- 0364US5396569AOptical line monitoring method and an apparatus permitting simultaneous line monitoring and information communicationFURUKAWA ELECTRIC CO LTD·Filed 1993·Granted Mar 7, 1995·36 cites·7 claims
- 0462US5214728ALight communication systemSUMITOMO ELECTRIC INDUSTRIES·Filed 1992·Granted May 25, 1993·36 cites·15 claims
- 0533US5430824AOptical fibre, waveguide, and optical active deviceSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Jul 4, 1995·4 cites·9 claims
- 0627US5422975AOptical filter doped with rare earth elements and used with optical fibersSUMITOMO ELECTRIC INDUSTRIES·Filed 1993·Granted Jun 6, 1995·3 cites·16 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →