Hiroshi Hosaka
27Patents
13h-index
59Co-inventors
84Inventor score
Filing activity: Apr 27, 1981 → Jan 6, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4916547A | Color image forming apparatus | Physics | 58 | Expired |
| US4923533A | Magnetic shield-forming magnetically soft powder, composition thereof, and process of making | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4335183A | Magnetic recording medium and method of fabricating it | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5918087A | Image forming apparatus | Physics | 27 | Expired |
| US5717843A | Image recording apparatus | Electricity | 26 | Expired |
| US5602651A | Image recording apparatus | Electricity | 24 | Expired |
| US5774232A | Image recording apparatus | Electricity | 23 | Expired |
| US4957088A | Fuel injection control system for an automotive engine | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4928654A | Fuel injection control system for an automotive engine | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5745664A | Image synthesizing method and image recording apparatus which electronically synthesizes an image with a page of information | Electricity | 19 | Expired |
| US5068794A | System and method for computing asynchronous interrupted fuel injection quantity for automobile engines | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5026614A | Magnetic recording medium with a zinc cobalt oxide non-magnetic substrate containing nickel or manganese | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5862430A | Image forming apparatus with a sensing device that determines the presence or absence of a toner cartridge | Physics | 13 | Expired |
| US5887217A | Image forming apparatus that searches for toner cartridges in need of replacement | Physics | 13 | Expired |
| US4967715A | Fuel injection control system for an automotive engine | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5231555A | Magnetic head comprising a laminated magnetic layer structure between non magnetic rock salt structure oxide substrates | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7682420B2 | Method for leaching gold | Emerging Cross-Sectional Technologies | 5 | Active |
| US4501666A | Process for the removal of bismuth and antimony from aqueous sulfuric acid solution containing bismuth and/or antimony | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7580651B2 | Image forming apparatus and method of controlling energy saving mode | Electricity | 5 | Expired |
| US6785201B2 | Optical information recording and reading apparatus | Physics | 5 | Expired |
| US7842120B2 | Method of obtaining copper from ore | Emerging Cross-Sectional Technologies | 4 | Active |
| US5089196A | Non-magnetic substrate of magnetic head, magnetic head and method for producing substrate | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5242865A | Non-magnetic substrate of magnetic head | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8585798B2 | Method for recovering metal from ore | Emerging Cross-Sectional Technologies | 1 | Active |
| US8388730B2 | Process of leaching gold | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.