Sumio Shimada
3Patents
3h-index
7Co-inventors
39Inventor score
Filing activity: Jul 30, 1974 → Sep 21, 1982
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4379859A | Pre-foamed particles of polypropylene resin and process for production thereof | Chemistry; Metallurgy | 78 | Expired |
| US4436840A | Process for producing pre-foamed particles of polyolefin resin | Emerging Cross-Sectional Technologies | 33 | Expired |
| US3933697A | Method for preparing a polyurethane foam comprising quaternary ammonium salt as antistatic agent | Emerging Cross-Sectional Technologies | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.