Inventor · disambiguated record
Toshikatsu Narumi
Also filed as: NARUMI TOSHIKATSU
3 granted patents·312 citations·filing 1993–1996
79Inventor score
Files withFUJITSU LTD3
Top patents by PatentIndex Score
3 records- 0193US5982886AUnauthorized use preventing method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatusFUJITSU LTD·Filed 1996·Granted Nov 9, 1999·76 cites·6 claims
- 0293US5418852AUnauthorized use prevention method for optical disks, optical disk having unauthorized use prevention function, and optical disk apparatusFUJITSU LTD·Filed 1993·Granted May 23, 1995·183 cites·53 claims
- 0369US5402339AApparatus for making music database and retrieval apparatus for such databaseFUJITSU LTD·Filed 1993·Granted Mar 28, 1995·53 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →