Junji Ishikawa
26Patents
6h-index
19Co-inventors
66Inventor score
Filing activity: Jul 1, 1987 → Dec 7, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5248853A | Semiconductor element-mounting printed board | Electricity | 29 | Expired |
| US5039338A | Electroless copper plating solution and process for formation of copper film | Chemistry; Metallurgy | 14 | Expired |
| US6498356B1 | LED chip, LED array chip, LED array head and image-forming apparatus | Electricity | 13 | Expired |
| US5965211A | Electroless copper plating solution and process for formation of copper film | Chemistry; Metallurgy | 11 | Expired |
| US4812897A | Semiconductor element sealing structure | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7042591B1 | Image exposure apparatus and image forming apparatus | Physics | 9 | Expired |
| US4956014A | Electroless copper plating solution | Chemistry; Metallurgy | 6 | Expired |
| US4935267A | Process for electrolessly plating copper and plating solution therefor | Chemistry; Metallurgy | 6 | Expired |
| US7865097B2 | Image forming apparatus and control method | Physics | 4 | Active |
| US4814009A | Electroless copper plating solution | Chemistry; Metallurgy | 4 | Expired |
| US8515297B2 | Serial communication apparatus and image forming apparatus including the same | Physics | 2 | Active |
| US8023841B2 | Fixing controller and image forming apparatus | Physics | 2 | Active |
| US8068756B2 | Image forming apparatus and control method | Physics | 2 | Active |
| US9411279B2 | Image forming and fixing apparatuses having fixing and pressing rotating member and rectification element | Physics | 2 | Active |
| US7158733B2 | Image forming apparatus which includes an image bearing body surface potential detection feature | Physics | 2 | Expired |
| US8461497B2 | Power supply circuitry for inductive heating element and capable of minimizing losses to switching element | Physics | 1 | Active |
| US10423116B2 | Power supply apparatus and image forming apparatus having adjusted load power | Electricity | 1 | Active |
| US10444677B2 | Image forming apparatus with fixing device, the image forming apparatus controlling supply of power to a heater by a driver based on an output of a temperature detector | Physics | 1 | Active |
| US10168655B2 | Image forming apparatus including electric storage portion | Electricity | 0 | Active |
| US4790876A | Chemical copper-blating bath | Chemistry; Metallurgy | 0 | Expired |
| US10852672B2 | Power supply device and image forming apparatus | Physics | 0 | Active |
| US7573007B2 | Power supply, image forming apparatus, and electric current supply method | Physics | 0 | Active |
| US10698358B2 | Power supply apparatus and image forming apparatus having adjusted load power | Electricity | 0 | Active |
| US8768192B2 | Fixing apparatus of induction heating type for fixing image formed on sheet | Physics | 0 | Active |
| US11693344B2 | Fixing belt unit and fixing device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.