Inventor · disambiguated record
Masahiko Matsui
Also filed as: MATSUI MASAHIKO
7 granted patents·83 citations·filing 1985–2006
84Inventor score
Top patents by PatentIndex Score
7 records- 0183US4803575ATape cassettes having bottom grooves for use in tape recorder having bottom projection in cassette holderMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Feb 7, 1989·31 cites·12 claims
- 0278US4844377ATape cassetteMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Jul 4, 1989·25 cites·9 claims
- 0375US7773847B2Multimode optical fiberSUMITOMO ELECTRIC INDUSTRIES·Filed 2006·Granted Aug 10, 2010·7 cites·8 claims
- 0460US4809113ATape cassette with improved cover structureMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Feb 28, 1989·12 cites·2 claims
- 0548US7164829B2Optical fiber, optical transmission line and optical communications systemSUMITOMO ELECTRIC INDUSTRIES·Filed 2002·Granted Jan 16, 2007·2 cites·2 claims
- 0634US4811121AMagnetic recording and reproducing system using preceding and lagging groups of rotary heads to permit coincident timing for reproduced video and audio signalsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1985·Granted Mar 7, 1989·4 cites·7 claims
- 0727US6449986B2Method of production of porous glass base material for optical fiber with cleaning of the burner with gas at 25 m/s or fasterSUMITOMO ELECTRIC INDUSTRIES·Filed 1998·Granted Sep 17, 2002·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →