Kouichi Nagasawa
17Patents
10h-index
25Co-inventors
68Inventor score
Filing activity: Jan 4, 1977 → Jan 8, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4890148A | Semiconductor memory cell device with thick insulative layer | Electricity | 43 | Expired |
| US5005068A | Semiconductor memory device | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4803534A | Semiconductor device sram to prevent out-diffusion | Electricity | 24 | Expired |
| US4110899A | Method for manufacturing complementary insulated gate field effect transistors | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4734383A | Fabricating semiconductor devices to prevent alloy spiking | Electricity | 20 | Expired |
| US4805143A | Read-only memory | Physics | 19 | Expired |
| US4549340A | Method of making CMOS semiconductor device using specially positioned, retained masks, and product formed thereby | Electricity | 18 | Expired |
| US4637124A | Process for fabricating semiconductor integrated circuit device | Electricity | 17 | Expired |
| US4792841A | Semiconductor devices and a process for producing the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4626450A | Process for producing semiconductor devices | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4990998A | Semiconductor device to prevent out-diffusion of impurities from one conductor layer to another | Electricity | 10 | Expired |
| US5122857A | Semiconductor memory device having first and second selecting lines for accessing memory cells | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4912674A | Read-only memory | Physics | 8 | Expired |
| US5028975A | Semiconductor devices and a process for producing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5055420A | Process for fabricating semiconductor integrated circuit devices | Electricity | 3 | Expired |
| USRE31079E | Method for manufacturing complementary insulated gate field effect transistors | General | 1 | Expired |
| US4243897A | Charge coupled semiconductor device storing 2-bit information | Electricity | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.