Masayoshi Ishii
28Patents
8h-index
44Co-inventors
75Inventor score
Filing activity: Jun 8, 1976 → Jan 6, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5831782A | Method and apparatus for supplying optimal bias current to a magnetic head | Physics | 18 | Expired |
| US4048936A | Apparatus and method for selectively supporting, conveying and mounting a propeller and rudder | Performing Operations; Transporting | 17 | Expired |
| US6906608B2 | Magnetic core including magnet for magnetic bias and inductor component using the same | Electricity | 13 | Expired |
| US6738586B2 | Print control method of electrophotograph and image formation apparatus with potential sensor using the method | Physics | 11 | Expired |
| US5956200A | Method of and apparatus for controlling magnetic disc drive | Physics | 9 | Expired |
| US6813462B2 | Electro-photographic developing unit | Physics | 8 | Expired |
| US6995643B2 | Magnetically biasing bond magnet for improving DC superposition characteristics of magnetic coil | Electricity | 8 | Expired |
| US6686943B2 | Control method of an electrophotographic record apparatus and image formation apparatus including controlling developing bias and photoconductor surface potential | Physics | 8 | Expired |
| US6330405A | Image forming apparatus | Physics | 8 | Expired |
| US6717504B2 | Magnetic core including bias magnet and inductor component using the same | Electricity | 8 | Expired |
| US5790333A | Disk drive having optimized off-track compensation | Physics | 7 | Expired |
| US6856231B2 | Magnetically biasing bond magnet for improving DC superposition characteristics of magnetic coil | Electricity | 7 | Expired |
| US6710693B2 | Inductor component containing permanent magnet for magnetic bias and method of manufacturing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6590485B2 | Magnetic core having magnetically biasing bond magnet and inductance part using the same | Electricity | 6 | Expired |
| US6621398B2 | Magnetic core comprising a bond magnet including magnetic powder whose particle's surface is coated with oxidation-resistant metal | Electricity | 6 | Expired |
| US6684036B2 | Image forming apparatus | Physics | 6 | Expired |
| US6879800B2 | Developing apparatus and electrostatic record apparatus | Physics | 5 | Expired |
| US6760553B2 | Electrophotographic cluster printing system with controlled image quality | Physics | 4 | Expired |
| US6753751B2 | Magnetic core including magnet for magnetic bias and inductor component using the same | Electricity | 4 | Expired |
| US7090956B2 | Image forming method and image forming apparatus | Physics | 3 | Expired |
| US6646532B2 | Powder core and reactor using the same | Electricity | 3 | Expired |
| US6487384B2 | Image forming electrophotography apparatus and magnetic developing unit | Physics | 3 | Expired |
| US6788185B2 | Powder core and high-frequency reactor using the same | Electricity | 2 | Expired |
| US6131000A | Electrophotographic printing apparatus using electric potential dividing development | Physics | 1 | Expired |
| US6829449B2 | Image forming apparatus with transfer bias inverting function | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.