Marvin M. Johnson
213Patents
33h-index
98Co-inventors
93Inventor score
Filing activity: Feb 7, 1975 → Mar 28, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6107230A | Compositions that can produce polymers | Chemistry; Metallurgy | 322 | Expired |
| US6395666B1 | Organometal catalyst compositions | Emerging Cross-Sectional Technologies | 319 | Expired |
| US6165929A | Compositions that can produce polymers | Emerging Cross-Sectional Technologies | 296 | Expired |
| US6316553A | Process for producing polymers using a composition comprising an organometal compound, a treated solid oxide compound, and an organoaluminum compound | Chemistry; Metallurgy | 289 | Expired |
| US6576583B1 | Organometal catalyst composition | Chemistry; Metallurgy | 244 | Expired |
| US4364855A | Production of aluminum phosphate from concentrated mass | Performing Operations; Transporting | 91 | Expired |
| US4364842A | Phosphate supported chromium catalyst | Chemistry; Metallurgy | 79 | Expired |
| US4364854A | Acid gelling aluminum phosphate from concentrated mass and catalyst containing same | Performing Operations; Transporting | 75 | Expired |
| US7550634B2 | Process for converting triglycerides to hydrocarbons | Emerging Cross-Sectional Technologies | 74 | Active |
| US4444965A | Olefin polymerization using chromium on an aluminum phosphate produced from a concentrated mass | Performing Operations; Transporting | 67 | Expired |
| US4151072A | Reclaiming used lubricating oils | Chemistry; Metallurgy | 64 | Expired |
| US4444962A | Polymerization process using catalysts with acid gelled aluminum phosphate base | Performing Operations; Transporting | 64 | Expired |
| US4404124A | Selective hydrogenation catalyst | Emerging Cross-Sectional Technologies | 63 | Expired |
| US7045670B2 | Process for liquid phase hydrogenation | Chemistry; Metallurgy | 62 | Expired |
| US5866735A | Hydrocarbon hydrogenation process | Chemistry; Metallurgy | 59 | Expired |
| US4444964A | Polymerization process using phosphate supported chromium catalyst | Chemistry; Metallurgy | 57 | Expired |
| US4504638A | Ethylene polymers made from phosphate supported chromium catalyst | Chemistry; Metallurgy | 54 | Expired |
| US6653416B2 | Polymerization process utilizing organometal catalyst compositions and the polymer produced thereby | Emerging Cross-Sectional Technologies | 51 | Expired |
| US6992032B2 | Organometal catalyst compositions | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4460756A | Olefin polymerization method | Chemistry; Metallurgy | 50 | Expired |
| US4484015A | Selective hydrogenation | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4122125A | Hydroalkylation using multimetallic zeolite catalyst | Chemistry; Metallurgy | 46 | Expired |
| US5489727A | Isopentane disproportionation | Chemistry; Metallurgy | 40 | Expired |
| US4593148A | Process for removal of arsine impurities from gases containing arsine and hydrogen sulfide | Chemistry; Metallurgy | 40 | Expired |
| US6096933A | Hydrocarbon hydrogenation and catalyst therefor | Chemistry; Metallurgy | 40 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.