Inventor · disambiguated record
Masao Sumi
Also filed as: SUMI MASAO · TANAKA TOSHIKI P
6 granted patents·189 citations·filing 1976–2001
86Inventor score
Top patents by PatentIndex Score
6 records- 0191US4184744AOptical fiberHITACHI CABLE·Filed 1976·Granted Jan 22, 1980·69 cites·4 claims
- 0285US4123242AApparatus for producing optical fiberHITACHI LTD·Filed 1977·Granted Oct 31, 1978·32 cites·6 claims
- 0380US4101300AMethod and apparatus for drawing optical fiberHITACHI LTD·Filed 1976·Granted Jul 18, 1978·24 cites·30 claims
- 0478US4185890AOptical transmission lineHITACHI LTD·Filed 1976·Granted Jan 29, 1980·32 cites·7 claims
- 0573US6671638B2Oscillation measuring method and frequency measuring apparatusSUZUKI MOTOR CO·Filed 2001·Granted Dec 30, 2003·16 cites·9 claims
- 0658US4206967AOptical fiberHITACHI CABLE·Filed 1978·Granted Jun 10, 1980·16 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →