Roy E. Pratt
22Patents
10h-index
25Co-inventors
75Inventor score
Filing activity: Dec 23, 1974 → Apr 20, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4419221A | Cracking with short contact time and high temperatures | Chemistry; Metallurgy | 93 | Expired |
| US5545602A | Catalyst with specified pore size distribution | Performing Operations; Transporting | 55 | Expired |
| US5435908A | Hydroconversion process employing catalyst with specified pore size distribution | Performing Operations; Transporting | 48 | Expired |
| US5468371A | Catalyst for residual conversion demonstrating reduced toluene insolubles | Chemistry; Metallurgy | 43 | Expired |
| US5318689A | Heavy naphtha conversion process | Chemistry; Metallurgy | 30 | Expired |
| US4304659A | Method for controlling regenerator temperature in a fluidized catalytic cracking process | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5399259A | Hydroconversion process employing catalyst with specified pore size distribution | Performing Operations; Transporting | 15 | Expired |
| US4388176A | Hydrocarbon conversion process | Chemistry; Metallurgy | 15 | Expired |
| US5416054A | Hydroconversion catalyst with specified pore size distribution | Performing Operations; Transporting | 12 | Expired |
| US4619758A | Fluid catalytic cracking method | Chemistry; Metallurgy | 12 | Expired |
| US4062759A | Fluidized catalytic cracking regeneration process | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5108580A | Two catalyst stage hydrocarbon cracking process | Chemistry; Metallurgy | 10 | Expired |
| US3966587A | Method for controlling regenerator temperature in a fluidized cracking process | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4595145A | Air distribution apparatus for a fluid catalytic cracking catalyst regenerator | Performing Operations; Transporting | 7 | Expired |
| US4060395A | Fluidized cracking catalyst regeneration apparatus | Performing Operations; Transporting | 7 | Expired |
| US4243630A | Fluid catalytic cracking unit yield monitor | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4725408A | Fluid catalytic cracking apparatus | Chemistry; Metallurgy | 6 | Expired |
| US4430201A | Regeneration of fluidizable catalyst | Chemistry; Metallurgy | 6 | Expired |
| US4324688A | Regeneration of cracking catalyst | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5043056A | Suppressing sediment formation in an ebullated bed process | Chemistry; Metallurgy | 3 | Expired |
| US5028310A | Reduction of SO.sub.x in regenerator off gas of a fluid cracking unit | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5395512A | Hydrocarbon cracking process employing zeolite catalysts with hybrid [A1,B]-zeolite additives | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.