Roger Marzin
7Patents
5h-index
15Co-inventors
60Inventor score
Filing activity: Nov 26, 1984 → Feb 27, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5885441A | Steam conversion process and catalyst | Chemistry; Metallurgy | 63 | Expired |
| US4676886A | Process for producing anode grade coke employing heavy crudes characterized by high metal and sulfur levels | Chemistry; Metallurgy | 26 | Expired |
| US8679322B2 | Hydroconversion process for heavy and extra heavy oils and residuals | Chemistry; Metallurgy | 26 | Active |
| US4655903A | Recycle of unconverted hydrocracked residual to hydrocracker after removal of unstable polynuclear hydrocarbons | Chemistry; Metallurgy | 23 | Expired |
| US4732664A | Process for solid separation from hydroprocessing liquid product | Chemistry; Metallurgy | 21 | Expired |
| US8551907B2 | Dispersed metal sulfide-based catalysts | Chemistry; Metallurgy | 4 | Active |
| US8815765B2 | Dispersed metal sulfide-based catalysts | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.