Masayoshi Usui
122Patents
21h-index
40Co-inventors
90Inventor score
Filing activity: Nov 18, 1976 → Feb 8, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5346675A | Exhaust gas cleaning apparatus | Emerging Cross-Sectional Technologies | 70 | Expired |
| US5114250A | Joint for coupling small-diameter pipes | Emerging Cross-Sectional Technologies | 51 | Expired |
| US5172940A | Connector device for connecting small diameter pipe | Emerging Cross-Sectional Technologies | 49 | Expired |
| US7281530B2 | Supercharging system for internal combustion engine | Mechanical Engineering; Lighting; Heating | 44 | Expired |
| US4948180A | Connector for tube of small diameter | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6126208A | Common rail and method of manufacturing the same | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6297484A | Magnetic heater | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4899965A | Apparatus for collectively fixing pipes | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US4964658A | Small-size piping coupling joint | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5048875A | Connector interposed between small-diameter metallic pipe and flexible hose | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5046765A | Tubular fitting for connection of a branch pipe | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US6408826B1 | Common rail and method of manufacturing the same | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4190504A | Anticorrosive overlap-coated steel material | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5109888A | High-pressure metallic pipe provided with connecting head part and method for formation thereof | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5265793A | Small thick-walled composite metal tubing and process of producing the same | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US4909462A | Device and method for locking piping | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5741132A | Mirror for dental examination | Human Necessities | 25 | Expired |
| US5081326A | Electroconductive composite tube assembly | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4944537A | Small-diameter pipe connector | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5887910A | Connection structure for branching connector in high-pressure fuel rail | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5024198A | Fuel delivery rail assembly | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4795114A | Stationary clamping device | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6144020A | Apparatus for simultaneously generating a fluid flow and heating the flowing fluid | Electricity | 20 | Expired |
| US4792161A | Structure for connecting ends of exhaust pipes | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5104627A | Exhaust gas cleaning apparatus | Emerging Cross-Sectional Technologies | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.