Jiro Ishikawa
5Patents
3h-index
15Co-inventors
54Inventor score
Filing activity: May 21, 1984 → Aug 2, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4776929A | Process for production of quaternary ammonium hydroxides | Chemistry; Metallurgy | 14 | Expired |
| US7110295B2 | Semiconductor data processing device | Physics | 13 | Expired |
| US4505821A | Method of treating waste liquors containing phenolics and formaldehyde | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4983757A | Process for production of carboxylic acid esters and formamide | Chemistry; Metallurgy | 3 | Expired |
| US12165702B2 | Semiconductor device | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.