John J. Walsh
4Patents
0Active
4Granted
27Portfolio score
Filing activity: Dec 18, 1979 → Sep 13, 1984
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4571995A | Digital readout indicator of oxygen usage, pressure and flow | Physics | 52 | Expired |
| US4540936A | Soil moisture sensor | Physics | 22 | Expired |
| US4298824A | Millimeter and sub-millimeter radiation source | Electricity | 17 | Expired |
| US4288742A | Electrical moisture sensor | Physics | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.