Hiromitsu Misawa
24Patents
8h-index
29Co-inventors
75Inventor score
Filing activity: Jan 24, 1991 → Mar 29, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5599627A | Magnetic particles comprising magnetite core and process for producing the same | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5389482A | Magnetic particle powder included in magnetic toners for magnetic image character recognition | Electricity | 19 | Expired |
| US5652060A | Spherical magnetic particles for magnetic toner and process for producing the same | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5874019A | Magnetic particles for magnetic toner and process for producing the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5470660A | Iron oxide particles and process for producing the same | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5648170A | Coated granular magnetite particles and process for producing the same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6780555B2 | Black magnetic iron oxide particles and magnetic toner | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5688852A | Iron oxide particles and process for producing the same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5512405A | Iron oxide particles and process for producing the same | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7670676B2 | Pharmaceutical raw material | Emerging Cross-Sectional Technologies | 7 | Active |
| US5843610A | Magnetic particles for magentic toner and process for producing the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5858532A | Magnetite particles, magnetic iron oxide particles, process for the production of the same and magnetic toner using the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6383637B1 | Black magnetic iron oxide particles for magnetic toner and process for producing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5328793A | Magnetic particles for magnetic toner | Physics | 6 | Expired |
| US6103437A | Magnetic toner particles comprising magnetite particles containing silicon | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7144626B2 | Magnetic iron oxide particles and magnetic toner using the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5232805A | Magnetic particles containing iron as the main component and process for producing the same | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5578375A | Granular magnetite particles and process for producing the same | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7597958B2 | Black magnetic iron oxide particles having a specific dissolution of sulfur element | Emerging Cross-Sectional Technologies | 1 | Active |
| US9448500B2 | Magnetic iron oxide particles, magnetic carrier for electrophotographic developers and process for producing the same, and two-component system developer | Emerging Cross-Sectional Technologies | 1 | Active |
| US6596255B2 | Tin-containing granular magnetic oxide particles and process for producing the same | Chemistry; Metallurgy | 0 | Expired |
| US7572505B2 | Black magnetic iron oxide particles having high breakdown voltage | Emerging Cross-Sectional Technologies | 0 | Active |
| US9285698B2 | Black magnetic iron oxide particles, magnetic carrier for electrophotographic developer and two-component developer | Physics | 0 | Active |
| US8852840B2 | Magnetic composite particles, magnetic carrier and developer | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.