Inventor · disambiguated record
Norikatsu Fujisawa
Also filed as: FUJISAWA NORIKATSU
5 granted patents·23 citations·filing 1994–2019
74Inventor score
Technology areasG11B
Files withSONY CORP5
Top patents by PatentIndex Score
5 records- 0157US5737154ARotary magnetic head apparatus with circuitry for driving head and circuitry for transmitting output signals in noncontact fashion disposed on rotary drumsSONY CORP·Filed 1996·Granted Apr 7, 1998·13 cites·10 claims
- 0242US11830533B2Method of producing magnetic powder and method of producing magnetic recording mediumSONY CORP·Filed 2019·Granted Nov 28, 2023·0 cites·16 claims
- 0338US5708543AMagnetic head with glass used to bond together two core halves having a coefficient of thermal expansion less than that of the ferromagnetic oxide used to make the core halvesSONY CORP·Filed 1996·Granted Jan 13, 1998·5 cites·7 claims
- 0436US5475551AMagnetic headSONY CORP·Filed 1994·Granted Dec 12, 1995·3 cites·8 claims
- 0532US5936815AMagnetic headSONY CORP·Filed 1997·Granted Aug 10, 1999·2 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →