Inventor · disambiguated record
Martinus De Graaf
Also filed as: DE GRAAF MARTINUS J M · DE GRAAF MARTINUS JOHANNES MAR
3 granted patents·1 pending application·112 citations·filing 1990–2001
76Inventor score
Top patents by PatentIndex Score
4 records- 0189US6549111B1Inductive elementKONINKL PHILIPS ELECTRONICS NV·Filed 2001·Granted Apr 15, 2003·47 cites·2 claims
- 0284US5188863ADirect effect master/stamper for optical recordingDU PONT·Filed 1990·Granted Feb 23, 1993·45 cites·24 claims
- 0377US6492893B2Method of manufacturing a substantially closed core, core, and magnetic coilKONINKL PHILIPS ELECTRONICS NV·Filed 2001·Granted Dec 10, 2002·20 cites·6 claims
- 0430US2002024413A1Metrhod of manufacturing a substantially closed core, core, and magnetic coilFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Martinus De Graaf files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →