David C. Johnston
5Patents
4h-index
8Co-inventors
50Inventor score
Filing activity: Sep 28, 1987 → Jan 6, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD523040S1 | Cutting tool insert | General | 30 | Expired |
| USD423024S | Cutting insert | General | 10 | Expired |
| USD431579S | Cutting insert | General | 10 | Expired |
| US4832877A | Tetranuclear sulfido-bridged complex of Cr(III) having a strongly magnetic ground state | Chemistry; Metallurgy | 7 | Expired |
| US8388274B2 | Round cutting insert with asymmetric chipbreaker feature | Emerging Cross-Sectional Technologies | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.