Darryl P. Klein
28Patents
12h-index
33Co-inventors
81Inventor score
Filing activity: Apr 12, 1996 → Mar 1, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6582590B1 | Multistage hydroprocessing using bulk multimetallic catalyst | Chemistry; Metallurgy | 113 | Expired |
| US6783663B1 | Hydrotreating using bulk multimetallic catalysts | Chemistry; Metallurgy | 105 | Expired |
| US6929738B1 | Two stage process for hydrodesulfurizing distillates using bulk multimetallic catalyst | Chemistry; Metallurgy | 101 | Expired |
| US6087544A | Process for the production of high lubricity low sulfur distillate fuels | Chemistry; Metallurgy | 31 | Expired |
| US5925239A | Desulfurization and aromatic saturation of feedstreams containing refractory organosulfur heterocycles and aromatics | Chemistry; Metallurgy | 30 | Expired |
| US5935420A | Desulfurization process for refractory organosulfur heterocycles | Chemistry; Metallurgy | 25 | Expired |
| US8021538B2 | Hydroconversion catalysts and methods of making and using same | Performing Operations; Transporting | 24 | Active |
| US5763731A | Process for selectively opening naphthenic rings | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6652737B2 | Production of naphtha and light olefins | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5928498A | Desulfurization and ring opening of petroleum streams | Chemistry; Metallurgy | 20 | Expired |
| US6221240A | Desulfurization and aromatic saturation of feedstreams containing refractory organosulfur heterocycles and aromatics | Chemistry; Metallurgy | 15 | Expired |
| US6245221A | Desulfurization process for refractory organosulfur heterocycles | Chemistry; Metallurgy | 13 | Expired |
| US6193877A | Desulfurization of petroleum streams containing condensed ring heterocyclic organosulfur compounds | Chemistry; Metallurgy | 11 | Expired |
| US6103106A | Desulfurization and ring opening of petroleum streams | Chemistry; Metallurgy | 9 | Expired |
| US6837989B2 | Cycle oil conversion process | Chemistry; Metallurgy | 8 | Expired |
| US7390766B1 | Hydroconversion catalysts and methods of making and using same | Performing Operations; Transporting | 7 | Expired |
| US6723230B1 | Regeneration of iron-based hydrogen sulfide sorbents | Performing Operations; Transporting | 7 | Expired |
| US6649043B1 | Regeneration of hydrogen sulfide sorbents | Performing Operations; Transporting | 5 | Expired |
| US6811682B2 | Cycle oil conversion process | Chemistry; Metallurgy | 5 | Expired |
| US6187176A | Process for the production of medicinal white oil | Chemistry; Metallurgy | 4 | Expired |
| US6589416B2 | Method and catalyst for opening naphthenic rings of naphthenic ring-containing compounds | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7560407B2 | Hydroconversion catalysts and methods of making and using same | Performing Operations; Transporting | 4 | Active |
| US7642212B2 | Hydroconversion catalysts and methods of making and using same | Performing Operations; Transporting | 4 | Active |
| US6586650B2 | Ring opening with group VIII metal catalysts supported on modified substrate | Chemistry; Metallurgy | 2 | Expired |
| US8969242B2 | Catalyst support and catalysts prepared therefrom | Chemistry; Metallurgy | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.