Seiji Yamaguchi
148Patents
29h-index
228Co-inventors
93Inventor score
Filing activity: Jan 15, 1985 → Dec 1, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5339799A | Medical system for reproducing a state of contact of the treatment section in the operation unit | Human Necessities | 2,041 | Expired |
| US5433740A | Method and apparatus for thermotherapy | Human Necessities | 267 | Expired |
| US5233682A | Vacuum cleaner with fuzzy control | Emerging Cross-Sectional Technologies | 187 | Expired |
| US5251358A | Vacuum cleaner with fuzzy logic | Emerging Cross-Sectional Technologies | 181 | Expired |
| US5216777A | Fuzzy control apparatus generating a plurality of membership functions for determining a drive condition of an electric vacuum cleaner | Emerging Cross-Sectional Technologies | 180 | Expired |
| US5558619A | Endoscope system with automatic control according to movement of an operator | Emerging Cross-Sectional Technologies | 161 | Expired |
| US6131007A | Developing device, process cartridge and electrophotographic image forming apparatus | Physics | 151 | Expired |
| US5182833A | Vacuum cleaner | Emerging Cross-Sectional Technologies | 128 | Expired |
| US5144715A | Vacuum cleaner and method of determining type of floor surface being cleaned thereby | Human Necessities | 128 | Expired |
| US6978099B2 | Developing apparatus, process cartridge, and electrophotographic image forming apparatus including an elastic member preventing a gap between a developing agent carrier and a layer thickness limiter from changing, and an electrophotographic image forming apparatus detachably mounting such process cartridge | Physics | 124 | Expired |
| US6834175B2 | Developer agitating member | Physics | 122 | Expired |
| US7534002B2 | Lighting device | Emerging Cross-Sectional Technologies | 118 | Active |
| US5609561A | Electronic type endoscope in which image pickup unit is dismounted to execute disinfection/sterilization processing | Physics | 108 | Expired |
| US5351677A | Medical system having object information reproduction means for palpation | Electricity | 96 | Expired |
| US5090259A | Pipe-inspecting apparatus having a self propelled unit | Physics | 78 | Expired |
| US5389898A | Phase locked loop having plural selectable voltage controlled oscillators | Electricity | 78 | Expired |
| US5398056A | Endoscope system | Human Necessities | 70 | Expired |
| US5614943A | Dissimilar endoscopes usable with a common control unit | Electricity | 58 | Expired |
| US5475825A | Semiconductor device having combined fully associative memories | Physics | 46 | Expired |
| US6488475B2 | Electric blower and electric cleaner with an air cooled power device situated between the impeller and motor | Emerging Cross-Sectional Technologies | 41 | Expired |
| US7035573B2 | Developing apparatus having developer carrying screw with a plurality of inclination angles | Physics | 41 | Expired |
| US6181145A | Probe card | Physics | 41 | Expired |
| US5327372A | Semiconductor memory device | Physics | 40 | Expired |
| US6947677B2 | Image forming apparatus with developing apparatus and method thereof | Physics | 38 | Expired |
| US5239215A | Large scale integrated circuit configured to eliminate clock signal skew effects | Electricity | 38 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.