MG

Martinus De Graaf

Philips: 2 patents #2,426 of 7,731Top 35%
EA E.I. Du Pont De Nemours And: 1 patents #4,343 of 8,010Top 55%
Overall (All Time): #1,609,552 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6549111 Inductive element Eelco G. Visser 2003-04-15
6492893 Method of manufacturing a substantially closed core, core, and magnetic coil 2002-12-10
5188863 Direct effect master/stamper for optical recording Michael G. Fickes, George H. Johnson, Howard E. Simmons, III 1993-02-23