Werner Steck
41Patents
10h-index
59Co-inventors
74Inventor score
Filing activity: Dec 23, 1974 → Feb 14, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4165232A | Manufacture of ferromagnetic metal particles essentially consisting of iron | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4826671A | Preparation of acicular .alpha.-Fe.sub.2 O.sub.3 | Chemistry; Metallurgy | 21 | Expired |
| US4810401A | Superparamagnetic solid particles | Human Necessities | 20 | Expired |
| US3993807A | Activation of substrates for electroless metallization with zero valent palladium complex | Chemistry; Metallurgy | 19 | Expired |
| US4155748A | Manufacture of ferromagnetic metal particles consisting essentially of iron | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4367214A | Manufacture of acicular ferrimagnetic iron oxide | Chemistry; Metallurgy | 13 | Expired |
| US4296149A | Manufacture of acicular cobalt-containing magnetic iron oxide | Physics | 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 |
| US4259368A | Manufacture of acicular magnetic iron oxide | Physics | 10 | Expired |
| US4360377A | Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4933004A | Preparation of acicular ferromagnetic metal particles of substantially iron | Chemistry; Metallurgy | 10 | Expired |
| US4287233A | Manufacture of acicular cobalt-containing magnetic iron oxide | Physics | 9 | Expired |
| US3959032A | Magnetic materials with exchange anisotropy and process for their manufacture | Electricity | 9 | Expired |
| US4213959A | Manufacture of acicular, ferrimagnetic iron oxide | Chemistry; Metallurgy | 9 | Expired |
| US4729785A | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Physics | 9 | Expired |
| US4464352A | Manufacture of acicular ferrimagnetic iron oxide | Chemistry; Metallurgy | 8 | Expired |
| US4344791A | Manufacture of acicular ferromagnetic iron particles | Electricity | 8 | Expired |
| US4295879A | Manufacture of acicular ferromagnetic iron particles | Electricity | 8 | Expired |
| US3961990A | Manufacture of magnetic materials which exhibit exchange anisotropy | Electricity | 8 | Expired |
| US4221776A | Manufacture of acicular ferrimagnetic iron oxides | Chemistry; Metallurgy | 7 | Expired |
| US4378240A | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Electricity | 6 | Expired |
| US4272563A | Manufacture of magnetic recording media having a wear-resistant surface | Physics | 6 | Expired |
| US4061726A | Manufacture of acicular .gamma.-iron(III) oxide | Chemistry; Metallurgy | 6 | Expired |
| US4420330A | Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron | Electricity | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.