Hermann Roller
24Patents
6h-index
55Co-inventors
72Inventor score
Filing activity: Sep 19, 1974 → Feb 18, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4360377A | Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5082737A | Magnetic recording media having a branched thermoplastic polyurethane binder containing a polysiloxane component in the main chain | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4567108A | Magnetic recording media | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4018968A | Coated magnetic recording media | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4018967A | Magnetic recording tape | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5543226A | Magnetic recording media | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5130202A | Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5085889A | Process for the preparation of magnetic particle dispersions using ball mills and grinding media | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4895764A | Magnetic recording media | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4534999A | Production of magnetic recording media having a backing coating | Physics | 3 | Expired |
| US4597990A | Preparation of magnetic recording media | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5346761A | Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4000336A | Production of magnetic recording media | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5330784A | Process of producing a flexible magnetic recording media having a backing coating | Physics | 2 | Expired |
| US4775553A | Production of magnetic recording media | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5217810A | Magnetic recording medium having a magnetic layer containing chromium dioxide particles and linolenic acid | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4656093A | Magnetic recording media | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4645723A | Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4581296A | Magnetic recording media | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5120608A | Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5419959A | Magnetic recording medium having an infra-red light transparent balkcoat layer | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5075179A | Magnetic recording media | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5064721A | Magnetic recording media | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5470650A | Magnetic recording media | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.