Masaaki Nakazawa
20Patents
19h-index
51Co-inventors
80Inventor score
Filing activity: Aug 29, 1986 → Dec 31, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6786864B2 | Endoscopic system and method for positioning an indwelling tube | Human Necessities | 1,678 | Expired |
| US6991602B2 | Medical treatment method and apparatus | Human Necessities | 277 | Expired |
| US4918521A | Solid state imaging apparatus | Electricity | 188 | Expired |
| US5507717A | Device for bending the insertion section of an endoscope | Human Necessities | 143 | Expired |
| US5707344A | Endoscope | Human Necessities | 140 | Expired |
| US5702347A | Endoscope system including endoscope and disposable protection cover | Human Necessities | 133 | Expired |
| US5876326A | Electronic endoscope with grounded spirally-wound lead wires | Human Necessities | 131 | Expired |
| US4794913A | Suction control unit for an endoscope | Human Necessities | 113 | Expired |
| US4736732A | Endoscopic fluid changing device | Human Necessities | 88 | Expired |
| US5569157A | Endoscope | Human Necessities | 86 | Expired |
| US4805618A | Oviduct closing apparatus | Human Necessities | 66 | Expired |
| US5078144A | System for applying ultrasonic waves and a treatment instrument to a body part | Human Necessities | 58 | Expired |
| US5871441A | Endoscope capable of manipulation soon after autoclaving | Human Necessities | 40 | Expired |
| US5735793A | Endoscope | Human Necessities | 38 | Expired |
| US6110104A | Endoscope system having an endoscope capable of being guided into an endoscope cover | Human Necessities | 34 | Expired |
| US5402770A | Endoscope pipeline controlling apparatus and endoscope system | Human Necessities | 28 | Expired |
| US5863286A | Endoscope system including endoscope and disposable protection cover | Human Necessities | 27 | Expired |
| US5343855A | Endoscope pipeline controlling apparatus and endoscope system | Human Necessities | 23 | Expired |
| US5879288A | Endoscope system including both reusable-type and cover-type endoscopes | Human Necessities | 20 | Expired |
| US5749829A | Endoscope system | Human Necessities | 16 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.