Manfred Ohlinger
41Patents
9h-index
85Co-inventors
78Inventor score
Filing activity: Jun 12, 1975 → Mar 17, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4271234A | Iron oxide magnetic pigments for the production of magnetic coatings | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4165232A | Manufacture of ferromagnetic metal particles essentially consisting of iron | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4212903A | Improving the magnetic properties of gamma-iron (III) oxide | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4155748A | Manufacture of ferromagnetic metal particles consisting essentially of iron | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4169912A | Iron oxide magnetic pigments for the production of magnetic coatings | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4367214A | Manufacture of acicular ferrimagnetic iron oxide | Chemistry; Metallurgy | 13 | Expired |
| US4178171A | Manufacture of acicular ferromagnetic iron particles | Physics | 13 | Expired |
| US4188302A | Manufacture of acicular cobalt-modified magnetic iron oxide | Chemistry; Metallurgy | 12 | Expired |
| US4287233A | Manufacture of acicular cobalt-containing magnetic iron oxide | Physics | 9 | Expired |
| US4213959A | Manufacture of acicular, ferrimagnetic iron oxide | Chemistry; Metallurgy | 9 | Expired |
| US4109046A | Flexible multi-layer magnetic recording media | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4177317A | Stabilization of chromium dioxide magnetic pigments | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4344791A | Manufacture of acicular ferromagnetic iron particles | Electricity | 8 | Expired |
| US4295879A | Manufacture of acicular ferromagnetic iron particles | Electricity | 8 | Expired |
| US4497723A | Preparation of acicular, ferrimagnetic iron oxides | Chemistry; Metallurgy | 8 | Expired |
| US4061725A | Manufacture of gamma-iron(III) oxide | Chemistry; Metallurgy | 7 | Expired |
| US4243059A | Method and device for determining the homogeneity of magnetic dispersions | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4670177A | Preparation of ferromagnetic chromium dioxide | Chemistry; Metallurgy | 7 | Expired |
| US4340494A | Process for the manufacture of ferromagnetic chromium dioxide | Chemistry; Metallurgy | 6 | Expired |
| US4061726A | Manufacture of acicular .gamma.-iron(III) oxide | Chemistry; Metallurgy | 6 | Expired |
| US4061727A | Manufacture of .gamma.-iron(III) oxide | Chemistry; Metallurgy | 6 | Expired |
| US4378240A | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Electricity | 6 | Expired |
| US5264292A | Transfer film having magnetic layers | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4521527A | Molded iron catalyst and its preparation | Chemistry; Metallurgy | 5 | Expired |
| US4619777A | Preparation of a magnetic dispersion | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.