John E. Waldrum
20Patents
10h-index
1Co-inventors
65Inventor score
Filing activity: Jan 27, 1975 → Feb 3, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4051805A | Can washing and coating system | Performing Operations; Transporting | 30 | Expired |
| US3968933A | Apparatus for hydraulic planting | Human Necessities | 30 | Expired |
| US5020725A | Manual spray apparatus | Performing Operations; Transporting | 18 | Expired |
| US5248086A | Thin invert compositions for spray application | Human Necessities | 16 | Expired |
| US3931930A | Variable spray apparatus and method | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4662565A | Pesticide spraying device | Performing Operations; Transporting | 14 | Expired |
| US5823436A | Micro orifice nozzle having fan spray pattern | Performing Operations; Transporting | 12 | Expired |
| US4231520A | Liquid sprayer | Performing Operations; Transporting | 12 | Expired |
| US4949937A | Remote throttling valve | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5031839A | Volume controllable applicator | Performing Operations; Transporting | 11 | Expired |
| US4892255A | Centrifugal applicating device | Performing Operations; Transporting | 10 | Expired |
| US4997129A | Low cost applicator and method of use | Performing Operations; Transporting | 9 | Expired |
| US5518183A | Micro-orifice nozzle | Performing Operations; Transporting | 7 | Expired |
| US4760963A | Ground spray applicator | Performing Operations; Transporting | 7 | Expired |
| US5110048A | Spray nozzles | Performing Operations; Transporting | 7 | Expired |
| US5146944A | Dual pump metering dilution apparatus | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5106005A | Reusable carrier for containers | Human Necessities | 2 | Expired |
| US4454988A | Self-cleaning nozzle | Performing Operations; Transporting | 2 | Expired |
| US4953790A | Low cost applicator and method of use | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4844345A | Aspirator tray | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.