Hitoshi Karasawa
50Patents
28h-index
120Co-inventors
91Inventor score
Filing activity: Jan 28, 1977 → Jul 23, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4979952A | Ultrasonic vibration treatment apparatus | Performing Operations; Transporting | 1,396 | Expired |
| US5836897A | Ultrasonic treatment apparatus | Human Necessities | 589 | Expired |
| US6761698B2 | Ultrasonic operation system | Human Necessities | 396 | Expired |
| US5391144A | Ultrasonic treatment apparatus | Human Necessities | 337 | Expired |
| US5575756A | Endoscope apparatus | Human Necessities | 309 | Expired |
| US5047043A | Resecting device for living organism tissue utilizing ultrasonic vibrations | Human Necessities | 281 | Expired |
| US5042460A | Ultrasonic treating apparatus with device for inhibiting drive when ultrasonic element is determined to be defective | Human Necessities | 258 | Expired |
| US5577991A | Three-dimensional vision endoscope with position adjustment means for imaging device and visual field mask | Electricity | 254 | Expired |
| US5163433A | Ultrasound type treatment apparatus | Human Necessities | 250 | Expired |
| US5076276A | Ultrasound type treatment apparatus | Human Necessities | 236 | Expired |
| US4867138A | Rigid electronic endoscope | Human Necessities | 211 | Expired |
| US5697939A | Apparatus for holding a medical instrument in place | Human Necessities | 189 | Expired |
| US4961424A | Ultrasonic treatment device | Human Necessities | 163 | Expired |
| US5154723A | Cerebral surgery apparatus | Human Necessities | 152 | Expired |
| US5588948A | Stereoscopic endoscope | Electricity | 130 | Expired |
| US4905082A | Rigid video endoscope having a detachable imaging unit | Human Necessities | 122 | Expired |
| US5211625A | Ultrasonic treatment apparatus | Human Necessities | 97 | Expired |
| US6398721B1 | Surgical microscope apparatus | Human Necessities | 85 | Expired |
| US4726370A | Resectoscope device | Human Necessities | 84 | Expired |
| US4989588A | Medical treatment device utilizing ultrasonic wave | Human Necessities | 78 | Expired |
| US8267854B2 | Endoscope system | Human Necessities | 64 | Active |
| US8182414B2 | Endoscope system having retaining instrument | Human Necessities | 59 | Active |
| US7025763B2 | Medical apparatus | Human Necessities | 54 | Expired |
| US5720706A | Stereoscopic endoscope | Electricity | 42 | Expired |
| US7306599B2 | Medical instrument and medical instrument system | Human Necessities | 40 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.