Ryosuke Isobe
24Patents
10h-index
31Co-inventors
75Inventor score
Filing activity: Jul 30, 1985 → Apr 9, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5242752A | Magnetic recording medium comprising a specified binder resin, specified ferromagnetic metal powder and .alpha.-alumina | Emerging Cross-Sectional Technologies | 118 | Expired |
| US4818606A | Highly running-endurant magnetic recording medium | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6194058A | Multi-layer magnetic recording medium, method and system of manufacture | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5458948A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5496622A | Magnetic recording medium comprising an underlayer containing .alpha.-iron oxide powder and a magnetic layer containing ferromagnetic metallic powder | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5455104A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4713293A | Magnetic recording media | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5527603A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5405679A | Magnetic recording medium comprising a non magnetic underlayer and two magnetic layers of specified composition and thickness | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5324571A | Magnetic recording medium comprising a support and a plurality of layers in which the magnetic layer has a specified plastic deformation | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5153079A | Magnetic recording medium comprising ferromagnetic powder and polar group containing ginder resins having different glass transition temperatures | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5094916A | Magnetic recording medium comprising a polyurethane binder resin having a specified glass transition, molecular weight, and polar group content | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5340635A | Magnetic recording medium having a magnetic layer with a specified vickers indentation hardness or plastic deformation | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6818298B2 | Magnetic recording medium with dual layer front coating and method of manufacture | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4835049A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5061516A | Production method for magnetic recording medium | Physics | 3 | Expired |
| US5670245A | Magnetic recording medium comprising a magnetic layer containing ferromagnetic metallic powder, binder, and aliphatic acid | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5449527A | Method of producing magnetic recording medium | Physics | 2 | Expired |
| US7163714B2 | Magnetic recording medium with dual layer front coating and method of manufacture | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5084342A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5045390A | Magnetic recording medium | Emerging Cross-Sectional Technologies | 1 | Expired |
| US9324354B2 | Barium ferrite magnetic storage media | Physics | 0 | Active |
| US7364809B2 | Magnetic recording tape media having low abrasivity and reliable media performance | Emerging Cross-Sectional Technologies | 0 | Expired |
| US10895922B2 | Film and stylus system for emulating pen-on-paper tactile feedback | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.