John Pontefract
5Patents
4h-index
9Co-inventors
46Inventor score
Filing activity: Jun 15, 1992 → Mar 27, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5886355A | Ion implantation apparatus having increased source lifetime | Electricity | 55 | Expired |
| US5262652A | Ion implantation apparatus having increased source lifetime | Electricity | 52 | Expired |
| US5554852A | Ion implantation having increased source lifetime | Electricity | 22 | Expired |
| US5517077A | Ion implantation having increased source lifetime | Electricity | 20 | Expired |
| US7004234B2 | Vaporizer for generating feed gas for an arc chamber | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.