SOFAME
4Patents
0Active
4Granted
25Portfolio score
Filing activity: Mar 17, 1993 → Oct 14, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5765546A | Direct contact water heater with dual water heating chambers | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5967137A | High efficiency direct-contact high temperature water heater | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5293861A | Direct contact water heater with hybrid heat source | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5749356A | Low NOX and CO emissions direct contact high temperature water heater | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.