Patchen, Inc.
8Patents
0Active
8Granted
30Portfolio score
Filing activity: Jul 15, 1994 → Jun 8, 1998
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5585626A | Apparatus and method for determining a distance to an object in a field for the controlled release of chemicals on plants, weeds, trees or soil and/or guidance of farm vehicles | Physics | 191 | Expired |
| US5809440A | Agricultural implement having multiple agents for mapping fields | Human Necessities | 178 | Expired |
| US5789741A | Detecting plants in a field by detecting a change in slope in a reflectance characteristic | Physics | 159 | Expired |
| US5837997A | Structure and method for detecting plants in a field using a light pipe | Physics | 85 | Expired |
| US5793035A | Apparatus and method for spraying herbicide on weeds in a cotton field | Physics | 79 | Expired |
| US5763873A | Photodetector circuit for an electronic sprayer | Physics | 56 | Expired |
| US5833144A | High speed solenoid valve cartridge for spraying an agricultural liquid in a field | Performing Operations; Transporting | 38 | Expired |
| US6062496A | Valve cartridge having pressure sensor for agriculture and weed control | Performing Operations; Transporting | 27 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.