Inventor · disambiguated record
Iwao Matsuyama
Also filed as: MATSUYAMA IWAO
12 granted patents·240 citations·filing 1974–1996
92Inventor score
Files withHITACHI LTD12
Top patents by PatentIndex Score
12 records- 0191US4317668AMethod for producing silica glassHITACHI LTD·Filed 1981·Granted Mar 2, 1982·61 cites·16 claims
- 0290US4426216AProcess for producing optical glassHITACHI LTD·Filed 1982·Granted Jan 17, 1984·39 cites·14 claims
- 0389US4323381AMethod for producing mother rods for optical fibersHITACHI LTD·Filed 1980·Granted Apr 6, 1982·36 cites·56 claims
- 0483US4019915AMethod of producing optically transparent ceramicsHITACHI LTD·Filed 1974·Granted Apr 26, 1977·34 cites·21 claims
- 0576US4324576AMethod for producing optical glassHITACHI LTD·Filed 1980·Granted Apr 13, 1982·22 cites·20 claims
- 0668US4259101AMethod for producing optical fiber preformHITACHI LTD·Filed 1979·Granted Mar 31, 1981·15 cites·10 claims
- 0762US4119886APulse generatorHITACHI LTD·Filed 1977·Granted Oct 10, 1978·17 cites·16 claims
- 0852US5034243AMethod 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
- 0932US5180616AHard disk magnetic recording medium comprising magnetic powder and a binder and having a specified magnetic layer thickness and surface roughnessHITACHI LTD·Filed 1989·Granted Jan 19, 1993·3 cites·1 claims
- 1031US5180608AProcess for producing a rigid magnetic disk by longitudinally generating standing waves or interference waves in an undried applied magnetic paintHITACHI LTD·Filed 1990·Granted Jan 19, 1993·1 cites·14 claims
- 1130US5028496AMagnetic coated recording medium and method of manfacturing the sameHITACHI LTD·Filed 1988·Granted Jul 2, 1991·1 cites·2 claims
- 1228US5856281ABearing and manufacturing method of bearing, and magnetic disk device with bearing containing a lubricating greaseHITACHI LTD·Filed 1996·Granted Jan 5, 1999·3 cites·8 claims
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