Duane D. Krohn
15Patents
11h-index
6Co-inventors
65Inventor score
Filing activity: Aug 27, 1974 → Jun 7, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5076761A | Safety drive circuit for pump motor | Electricity | 101 | Expired |
| US6390386B2 | Airless reversible spray tip | Performing Operations; Transporting | 64 | Expired |
| US6264115A | Airless reversible spray tip | Performing Operations; Transporting | 55 | Expired |
| US4009971A | Electric motor-driven, double-acting pump having pressure-responsive actuation | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US5441297A | Power unit cart | Performing Operations; Transporting | 35 | Expired |
| US4001935A | Roving cutter | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4081904A | Roving cutter | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4397610A | Reciprocable pump with variable speed drive | Physics | 25 | Expired |
| US5292232A | Liquid pump pressure control system | Electricity | 20 | Expired |
| US5346370A | Portable pumping system with generator powered clutch assembly | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4652024A | Telescoping handle and pressure liquid conduit | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US4323741A | Mechanical deflection apparatus for sensing fluid pressure | Physics | 8 | Expired |
| US4722230A | Pressure gauge for high pressure flow through diaphragm pump | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US4692048A | Pressure Roller Applicator | Performing Operations; Transporting | 4 | Expired |
| US5513966A | Misalignment compensating manifold for twin pumps | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.