Hiroshi Ishikawa
267Patents
32h-index
443Co-inventors
93Inventor score
Filing activity: Jul 23, 1974 → Aug 28, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5507766A | Vascular dilatation instrument and catheter | Human Necessities | 232 | Expired |
| US5750941A | Ultrasonic coordinates input device | Physics | 211 | Expired |
| US4625329A | Position analyzer for vehicle drivers | Mechanical Engineering; Lighting; Heating | 202 | Expired |
| US5208640A | Image recording apparatus | Physics | 197 | Expired |
| US5522832A | Blood vessel piercing instrument | Human Necessities | 186 | Expired |
| US6347528B1 | Refrigeration-cycle device | Emerging Cross-Sectional Technologies | 120 | Expired |
| US5506951A | Scroll bar with jump tags | Physics | 114 | Expired |
| US6603744B2 | Connection establishment method, communication method, state change transmission method, state changing method, wireless apparatus, wireless device, and computer | Electricity | 103 | Expired |
| USD404098S | Golf club head | General | 95 | Expired |
| US5713021A | Multimedia data search system that searches for a portion of multimedia data using objects corresponding to the portion of multimedia data | Emerging Cross-Sectional Technologies | 83 | Expired |
| US5313950A | Ultrasonic probe | Physics | 79 | Expired |
| USD446268S | Golf club head | General | 77 | Expired |
| US5637839A | Ultrasonic coordinate input apparatus | Emerging Cross-Sectional Technologies | 75 | Expired |
| USD425589S | Golf club head | General | 71 | Expired |
| US4497039A | Join operation processing system in relational model | Emerging Cross-Sectional Technologies | 62 | Expired |
| US5987226A | Printing system and method | Physics | 61 | Expired |
| US6314750A | Heat pump air conditioner | Mechanical Engineering; Lighting; Heating | 55 | Expired |
| US5174296A | Ultrasonic probe having a piezoelectrical element | Physics | 53 | Expired |
| US6477857B2 | Ejector cycle system with critical refrigerant pressure | Mechanical Engineering; Lighting; Heating | 52 | Expired |
| USD647468S1 | Pneumatic tire | General | 52 | Expired |
| US9582891B2 | Method and apparatus for segmenting an image in order to locate a part thereof | Physics | 51 | Active |
| US6179726A | Iron golf club set | Human Necessities | 45 | Expired |
| US5373520A | Surface emitting laser and method of manufacturing the same | Electricity | 42 | Expired |
| US5135406A | Rechargeable electric apparatus | Electricity | 41 | Expired |
| US5734899A | Device for managing data in a version | Physics | 41 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.