John G. Long
6Patents
2h-index
8Co-inventors
44Inventor score
Filing activity: Apr 8, 1977 → Nov 3, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6309969A | Copper metallization structure and method of construction | Electricity | 17 | Expired |
| US4479713A | Photographic exposure masks | Physics | 4 | Expired |
| US4132478A | Illumination system for a photographic copying apparatus | Physics | 2 | Expired |
| US4239382A | Photographic printing or enlarging apparatus | Physics | 0 | Expired |
| US4197001A | Photographic processing apparatus with variable sized tanks lined with bag-like plastic tank interiors | Physics | 0 | Expired |
| US4400084A | Photographic exposure masks | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.