Inventor · disambiguated record
Masanobu Sugiyama
Also filed as: SUGIYAMA MASANOBU
3 granted patents·12 citations·filing 1990–1992
60Inventor score
Technology areasG11B
Files withSONY CORP3
Top patents by PatentIndex Score
3 records- 0147US5143317ATape cassette with dual hub lock torsion springsSONY CORP·Filed 1990·Granted Sep 1, 1992·10 cites·3 claims
- 0230US5140488AMagnetic tape cassetteSONY CORP·Filed 1990·Granted Aug 18, 1992·2 cites·4 claims
- 0322US6421203B1Magnetic tape cassette slider lock mechanism with tapered surfaces and coil spring biasSONY CORP·Filed 1992·Granted Jul 16, 2002·0 cites·1 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →