Clean Energy
🏢 View company profile →11Patents
1Active
11Granted
34Portfolio score
Filing activity: Oct 7, 1974 → Nov 8, 2013
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4033113A | Steam generation with coal | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4158697A | Coal treatment apparatus | Emerging Cross-Sectional Technologies | 13 | Expired |
| US3933128A | Steam generation with coal | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US3966582A | Solubilization and reaction of coal and like carbonaceous feedstocks to hydrocarbons and apparatus therefor | Chemistry; Metallurgy | 12 | Expired |
| US7076950B2 | Internal explosion engine and generator using non-combustible gases | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US3966583A | Coal treatment process and apparatus | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4148356A | Steam generation with coal | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4169583A | Apparatus for reducing ore | Chemistry; Metallurgy | 9 | Expired |
| US4050904A | Solubilization and reaction of coal and like carbonaceous feedstocks to hydrocarbons and apparatus therefor | Chemistry; Metallurgy | 8 | Expired |
| US9482388B2 | Skid-mounted compressed gas dispensing systems, kits, and methods for using same | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US4104056A | Ore reduction using molten salts | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.