John Jackson
4Patents
1Active
4Granted
31Portfolio score
Filing activity: Jan 22, 1975 → May 14, 2014
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3939360A | Liquid level sensor and electrode assembly therefor | Emerging Cross-Sectional Technologies | 42 | Expired |
| US5777478A | Passive geophysical prospecting apparatus and method based upon detection of discontinuities associated with extremely low frequency electromagnetic fields | Physics | 32 | Expired |
| US6087833A | Passive geophysical prospecting apparatus and method based upon detection of discontinuities associated with extremely low frequency electromagnetic fields | Physics | 19 | Expired |
| US9273936B2 | Hoverball archery training and entertainment shooting gallery and kit | Mechanical Engineering; Lighting; Heating | 1 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.