John Chapin
5Patents
4h-index
3Co-inventors
50Inventor score
Filing activity: Jan 31, 1974 → Sep 22, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4166018A | Sputtering process and apparatus | Electricity | 182 | Expired |
| US4166784A | Feedback control for vacuum deposition apparatus | Chemistry; Metallurgy | 41 | Expired |
| US5301316A | System for determination of the equivalence of two objects without compromising then done by a third object nominated by one and accetped by the other | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4234054A | Multi-duct muffler | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US9907573B2 | Skin-care apparatus | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.