Inventor · disambiguated record
Tsuneo Suganuma
Also filed as: ISHIDA KOJI · SUGANUMA TSUNEO · SUMI MASAO
22 granted patents·530 citations·filing 1976–1994
96Inventor score
Top patents by PatentIndex Score
22 records- 0195US4426129AOptical fiber and method of producing the sameHITACHI LTD·Filed 1981·Granted Jan 17, 1984·51 cites·12 claims
- 0291US4317668AMethod for producing silica glassHITACHI LTD·Filed 1981·Granted Mar 2, 1982·61 cites·16 claims
- 0390US4426216AProcess for producing optical glassHITACHI LTD·Filed 1982·Granted Jan 17, 1984·39 cites·14 claims
- 0489US4323381AMethod for producing mother rods for optical fibersHITACHI LTD·Filed 1980·Granted Apr 6, 1982·36 cites·56 claims
- 0586US4581579AOptical magnetic-field measuring apparatus having improved temperature characteristicsHITACHI LTD·Filed 1983·Granted Apr 8, 1986·43 cites·8 claims
- 0684US4604577ATemperature-compensated magnetic field measuring instrumentHITACHI LTD·Filed 1983·Granted Aug 5, 1986·39 cites·23 claims
- 0778US4185890AOptical transmission lineHITACHI LTD·Filed 1976·Granted Jan 29, 1980·32 cites·7 claims
- 0876US4324576AMethod for producing optical glassHITACHI LTD·Filed 1980·Granted Apr 13, 1982·22 cites·20 claims
- 0975US5270987AMagneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium thereforHITACHI LTD·Filed 1990·Granted Dec 14, 1993·22 cites·53 claims
- 1074US4505729AMethod of producing optical fiber preformHITACHI LTD·Filed 1983·Granted Mar 19, 1985·19 cites·21 claims
- 1171US4406518ASingle-mode-transmission optical fiber and a method of manufacturing the sameHITACHI LTD·Filed 1981·Granted Sep 27, 1983·18 cites·5 claims
- 1268US5587235AMagnetic recording medium and magnetic recording apparatusHITACHI LTD·Filed 1994·Granted Dec 24, 1996·30 cites·17 claims
- 1368US4259101AMethod for producing optical fiber preformHITACHI LTD·Filed 1979·Granted Mar 31, 1981·15 cites·10 claims
- 1466US4203743AMethod of producing optical fiberHITACHI LTD·Filed 1978·Granted May 20, 1980·20 cites·20 claims
- 1561US4206968AOptical fiber and method for producing the sameHITACHI LTD·Filed 1978·Granted Jun 10, 1980·16 cites·12 claims
- 1658US4206967AOptical fiberHITACHI CABLE·Filed 1978·Granted Jun 10, 1980·16 cites·6 claims
- 1754US4786553AMagnetic recording mediumHITACHI LTD·Filed 1987·Granted Nov 22, 1988·13 cites·26 claims
- 1852US5034243AMethod for magnetic orientation of magnetic recording medium using Meissner effect of high Tc superconductorHITACHI LTD·Filed 1989·Granted Jul 23, 1991·8 cites·6 claims
- 1951US4390460ALithium oxide based amorphous material and process for preparation thereofHITACHI LTD·Filed 1981·Granted Jun 28, 1983·11 cites·9 claims
- 2049US4828592APolarization plane maintaining optical fiber fabricating methodHITACHI LTD·Filed 1986·Granted May 9, 1989·9 cites·8 claims
- 2140US4570064AOptical D.C. electric-field measuring apparatus with optic sensing means exhibiting both electrooptic and photoelectric effectsHITACHI LTD·Filed 1983·Granted Feb 11, 1986·6 cites·16 claims
- 2238US4483617AOptical gyroscope with large propagation constant differenceHITACHI LTD·Filed 1982·Granted Nov 20, 1984·4 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →