Koji Ishikawa
49Patents
9h-index
79Co-inventors
78Inventor score
Filing activity: Dec 14, 1976 → Jul 23, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7637783B2 | Contact member having multiple contact parts and connector including same | Emerging Cross-Sectional Technologies | 35 | Active |
| US4139672A | Process for forming a coating having a metallic finish | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5673558A | Hydraulic circuit system for hydraulic excavator | Fixed Constructions | 22 | Expired |
| US6654064B2 | Image pickup device incorporating a position defining member | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5447027A | Hydraulic drive system for hydraulic working machines | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5421155A | Hydraulic drive system for hydraulic working machines | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US7014487B2 | Connector capable of preventing abrasion | Electricity | 13 | Expired |
| US4142018A | Process for forming metallic finish coatings | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5465178A | Focusing optical system for semiconductor lasers | Electricity | 9 | Expired |
| US5877553A | Metallic electronic component packaging arrangement | Electricity | 8 | Expired |
| US7942677B2 | Conductive contact and conductive contact unit | Physics | 7 | Active |
| US4455360A | Electrophotographic toner comprising cinnamic acid | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7487609B2 | Hydraulic circuit device of hydraulic working machine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7772542B2 | Imaging apparatus having photoelectric conversion unit with position adjustment plate | Electricity | 5 | Active |
| US6206801A | Continuously variable transmission | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US7928033B2 | Catalyst for reducing mercury, a mercury conversion unit, and an apparatus for measuring total mercury in combustion exhaust gas by using the same | Emerging Cross-Sectional Technologies | 4 | Active |
| US8289720B2 | Electronic apparatus | Electricity | 4 | Active |
| US10254629B2 | Electronic device | Electricity | 3 | Active |
| US7866986B2 | Conductive contact unit and conductive contact | Physics | 3 | Active |
| US8493503B2 | Imaging apparatus | Electricity | 3 | Active |
| US8845844B2 | Vacuum lamination system and vacuum lamination method | Emerging Cross-Sectional Technologies | 2 | Active |
| US7955122B2 | Conductive contact unit | Physics | 2 | Active |
| US10261396B2 | Electronic device | Physics | 2 | Active |
| US8118600B2 | Inserting connector, connector unit, and backplane | Electricity | 2 | Active |
| US9379465B2 | Connection terminal having a press-fitting part inserted into a hollow part of a holding member | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.