Carl E. Bohman
30Patents
16h-index
28Co-inventors
81Inventor score
Filing activity: Feb 24, 1975 → Sep 25, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4918441A | Non-contact sensing unit for row crop harvester guidance system | Emerging Cross-Sectional Technologies | 208 | Expired |
| US4527241A | Automatic combine harvester adjustment system | Human Necessities | 142 | Expired |
| US4042132A | Spout control apparatus for agricultural machines | Human Necessities | 89 | Expired |
| US5359836A | Agricultural harvester with closed loop header control | Human Necessities | 83 | Expired |
| US6092745A | Site-specific control system for manure spreader | Human Necessities | 53 | Expired |
| US4799625A | Method and apparatus for adjusting a shear bar relative to a cutter head | Human Necessities | 44 | Expired |
| US4376609A | Automatic spout control for agricultural machines | Human Necessities | 43 | Expired |
| US4844675A | Bale accumulator with automatic control | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4639666A | Metal detector sensitivity adjustment and test assembly | Physics | 28 | Expired |
| US3972156A | Speed-independent static magnetic field metal detector | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4275546A | Stone discriminator | Human Necessities | 26 | Expired |
| US4433528A | Metal detector apparatus | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4929904A | Moisture sensing apparatus with movable probe in combination with an agricultural baler having a pickup | Human Necessities | 22 | Expired |
| US4077488A | Guidance assist system for agricultural machines | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4389154A | Time delay for a seat switch activated loader boom lock | Fixed Constructions | 17 | Expired |
| US4883964A | Optical method and apparatus for discriminating between crop stalks and weed stalks in a non-contact row crop harvester guidance system | Human Necessities | 16 | Expired |
| US4955437A | Underground electromagnetic tillage depth sensor | Fixed Constructions | 15 | Expired |
| US4305244A | Feeder house design for a combine | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4344074A | Magnetic field producing apparatus | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5033031A | Underground ultrasonic tillage depth sensor | Fixed Constructions | 11 | Expired |
| US5070682A | Acoustic detector with start-up control | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4805385A | Variable sensitivity metal detection system | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4603379A | Synchronization input for time based sequence controller | Physics | 10 | Expired |
| US4854113A | Digital noise cancellation in a metal detector | Human Necessities | 9 | Expired |
| US5078645A | Method and apparatus for hard object detection | Emerging Cross-Sectional Technologies | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.