Olav Hellwig
34Patents
9h-index
39Co-inventors
71Inventor score
Filing activity: Dec 3, 2003 → Jan 21, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6947235B2 | Patterned multilevel perpendicular magnetic recording media | Physics | 46 | Expired |
| US8031561B2 | Joint design of thermally-assisted magnetic recording head and patterned media for high optical efficiency | Physics | 45 | Active |
| US6865044B1 | Method for magnetic recording on patterned multilevel perpendicular media using thermal assistance and fixed write current | Physics | 31 | Expired |
| US6882488B1 | Method for magnetic recording on patterned multilevel perpendicular media using variable write current | Physics | 26 | Expired |
| US6906879B1 | Magnetic recording system with patterned multilevel perpendicular magnetic recording | Physics | 23 | Expired |
| US9530445B1 | Perpendicular heat-assisted magnetic recording (HAMR) medium with a perovskite oxide intermediate layer | Physics | 18 | Active |
| US9558777B2 | Heat assisted magnetic recording (HAMR) media having a highly ordered crystalline structure | Physics | 14 | Active |
| US7670696B2 | Perpendicular magnetic recording medium with patterned magnetic islands and nonmagnetic trenches and manufacturing method for suppressing surface diffusion of trench material | Physics | 12 | Active |
| US7862912B2 | Perpendicular magnetic recording medium and system with low-curie-temperature multilayer for heat-assisted writing and/or reading | Emerging Cross-Sectional Technologies | 12 | Active |
| US9324353B2 | Dual segregant heat assisted magnetic recording (HAMR) media | Physics | 9 | Active |
| US8399051B1 | Method for making a patterned perpendicular magnetic recording disk having a FePt or CoPt chemically ordered recording layer | Physics | 9 | Active |
| US7776388B2 | Fabricating magnetic recording media on patterned seed layers | Physics | 8 | Active |
| US8268461B1 | Patterned perpendicular magnetic recording medium with ultrathin oxide film and reduced switching field distribution | Physics | 7 | Active |
| US7846565B2 | Perpendicular magnetic recording disk drive with patterned disk having capping layer for suppression of surface diffusion of trench material | Physics | 7 | Active |
| US7732071B2 | Perpendicular magnetic recording system with patterned medium and manufacturing process for the medium | Physics | 6 | Active |
| US7514162B2 | Perpendicular magnetic recording medium with metamagnetic antiferromagnetically-coupled layer between the soft underlayer and recording layer | Physics | 5 | Active |
| US8130468B2 | System and apparatus for patterned media with reduced magnetic trench material | Emerging Cross-Sectional Technologies | 4 | Active |
| US10347281B2 | Structures and methods for templated growth of high areal density heat assisted magnetic recording media | Physics | 4 | Active |
| US8163405B2 | System, method and apparatus for multiple anisotropy layered magnetic structures for controlling reversal mechanism and tightening of switching field distribution in bit patterned media | Physics | 3 | Active |
| US8021769B2 | Patterned perpendicular magnetic recording medium with exchange coupled recording layer structure and magnetic recording system using the medium | Physics | 3 | Active |
| US8252153B2 | Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches | Physics | 3 | Active |
| US9280996B2 | All-optical magnetic recording system using FeMnPt media | Physics | 2 | Active |
| US8492010B2 | Silicon/gold seed structure for crystalline alignment in a film stack | Emerging Cross-Sectional Technologies | 2 | Active |
| US7960044B2 | Patterned-media perpendicular magnetic recording disk with servo regions having magnetized servo pillars and oppositely-magnetized servo trenches | Physics | 2 | Active |
| US8129043B2 | System, method and apparatus for strain-assisted magnetic recording for controlling switching field and tightening switching field distribution in bit patterned media | Physics | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.