David A. Lomas
69Patents
27h-index
30Co-inventors
88Inventor score
Filing activity: Jun 15, 1980 → Jun 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5584985A | FCC separation method and apparatus with improved stripping | Chemistry; Metallurgy | 79 | Expired |
| US5858207A | FCC process with combined regenerator stripper and catalyst blending | Chemistry; Metallurgy | 74 | Expired |
| US5451313A | FCC feed contacting with catalyst recycle reactor | Chemistry; Metallurgy | 64 | Expired |
| US6866771B2 | Process and apparatus for upgrading FCC product with additional reactor with catalyst recycle | Performing Operations; Transporting | 60 | Expired |
| US7026262B1 | Apparatus and process for regenerating catalyst | Performing Operations; Transporting | 58 | Expired |
| US5597537A | FCC feed contacting with catalyst recycle reactor | Chemistry; Metallurgy | 57 | Expired |
| US4988430A | Supplying FCC lift gas directly from product vapors | Chemistry; Metallurgy | 55 | Expired |
| US4353812A | Fluid catalyst regeneration process | Chemistry; Metallurgy | 55 | Expired |
| US5212129A | Inverted backmix coolers for FCC units | Performing Operations; Transporting | 52 | Expired |
| US6287522A | FCC apparatus with dual riser | Chemistry; Metallurgy | 51 | Expired |
| US6869521B2 | Process and apparatus for upgrading FCC product with additional reactor with thorough mixing | Performing Operations; Transporting | 51 | Expired |
| US4439533A | Fluid particle backmixed cooling process | Emerging Cross-Sectional Technologies | 49 | Expired |
| US5944982A | Method for high severity cracking | Chemistry; Metallurgy | 46 | Expired |
| US4960503A | Heating FCC feed in a backmix cooler | Chemistry; Metallurgy | 44 | Expired |
| US8354065B1 | Catalyst charge heater | Performing Operations; Transporting | 42 | Active |
| US5965012A | FCC process with short primary contacting and controlled secondary contacting | Chemistry; Metallurgy | 40 | Expired |
| US5310477A | FCC process with secondary dealkylation zone | Chemistry; Metallurgy | 40 | Expired |
| US8753502B1 | Using low carbon fuel with a catalyst charge heater | Emerging Cross-Sectional Technologies | 37 | Active |
| US5346613A | FCC process with total catalyst blending | Chemistry; Metallurgy | 35 | Expired |
| US4923834A | Side mounted coolers with improved backmix cooling in FCC regeneration | Chemistry; Metallurgy | 35 | Expired |
| US6010618A | FCC process with two zone short contact time reaction conduit | Chemistry; Metallurgy | 35 | Expired |
| US6248297A | FCC reactor arrangement for sequential disengagement and progressive temperature reduction | Chemistry; Metallurgy | 35 | Expired |
| US5128292A | Side mounted coolers with improved backmix cooling in FCC regeneration | Chemistry; Metallurgy | 34 | Expired |
| US4479870A | Use of lift gas in an FCC reactor riser | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5176815A | FCC process with secondary conversion zone | Chemistry; Metallurgy | 31 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.