Ralph H. Larson
5Patents
4h-index
6Co-inventors
46Inventor score
Filing activity: Oct 23, 1980 → Jan 11, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6085788A | Plastic coated valve rotor and a method of manufacturing | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4317475A | Liquid filling and level sensing apparatus | Performing Operations; Transporting | 12 | Expired |
| US5867900A | Plastic coated valve rotor and a method of manufacturing | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6284132A | Brine fill apparatus for water softener | Chemistry; Metallurgy | 4 | Expired |
| US6210646A | Permanganate feeder for iron filter | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.