Katsuhiro Fujikawa
8Patents
4h-index
3Co-inventors
50Inventor score
Filing activity: Nov 30, 1982 → Aug 11, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4469038A | System for controlling a sewing machine | Textiles; Paper | 9 | Expired |
| US4545314A | Control system for sewing machines | Textiles; Paper | 5 | Expired |
| US4530297A | Speed control apparatus for sewing machine | Textiles; Paper | 4 | Expired |
| US4706588A | Fast-release sewing machine control device | Textiles; Paper | 4 | Expired |
| US4648339A | Speed control apparatus for sewing machine | Textiles; Paper | 3 | Expired |
| US4509445A | Sewing machine control device | Textiles; Paper | 2 | Expired |
| US4915045A | Sewing machine control device | Textiles; Paper | 1 | Expired |
| US12249725B2 | All-solid-state battery | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.