Tadashi Iijima
66Patents
13h-index
94Co-inventors
87Inventor score
Filing activity: Oct 12, 1976 → May 20, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5719410A | Semiconductor device wiring or electrode | Electricity | 131 | Expired |
| US6100193A | Method of manufacturing a semiconductor device | Electricity | 113 | Expired |
| US5592024A | Semiconductor device having a wiring layer with a barrier layer | Emerging Cross-Sectional Technologies | 91 | Expired |
| US5903053A | Semiconductor device | Electricity | 78 | Expired |
| US5763953A | Semiconductor device and method of manufacturing the same | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6291891A | Semiconductor device manufacturing method and semiconductor device | Electricity | 47 | Expired |
| US6794286B2 | Process for fabricating a metal wiring and metal contact in a semicondutor device | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6150270A | Method for forming barrier layer for copper metallization | Electricity | 45 | Expired |
| US6348402B1 | Method of manufacturing a copper interconnect | Electricity | 40 | Expired |
| US5529954A | Method of diffusing a metal through a silver electrode to form a protective film on the surface of the electrode | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6314933A | Piston for internal combustion engines | Emerging Cross-Sectional Technologies | 31 | Expired |
| US7096848B2 | Direct injection diesel engine | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6090699A | Method of making a semiconductor device | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4108337A | Quantitative supply apparatus of powder coloring agent | Performing Operations; Transporting | 9 | Expired |
| US5996552A | Fuel injection device for engine with supercharger and method for controlling the same | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6368951B2 | Semiconductor device manufacturing method and semiconductor device | Electricity | 8 | Expired |
| US8314491B2 | Manufacturing method of semiconductor device and semiconductor device | Electricity | 8 | Active |
| US7156069B2 | Direct injection diesel engine | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7716961B2 | Method for executing water jet peening | Chemistry; Metallurgy | 7 | Active |
| US9382690B2 | Engine support mechanism with aftertreatment device | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US8932530B2 | Reducing agent aqueous solution mixing device and exhaust gas post-treatment device | Emerging Cross-Sectional Technologies | 6 | Active |
| US6787462B2 | Method of manufacturing semiconductor device having buried metal wiring | Emerging Cross-Sectional Technologies | 5 | Expired |
| USD776520S1 | Stay for furniture | General | 4 | Active |
| US11152418B2 | Solid-state imaging device and electronic apparatus | Electricity | 3 | Active |
| US6138643A | Fuel injection device with oil seal | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.