Stone & Webster Process Technology, Inc.
26Patents
11Active
26Granted
42Portfolio score
Filing activity: Jan 3, 1994 → Mar 23, 2011 · 9 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7479218B2 | Deep catalytic cracking process | Chemistry; Metallurgy | 21 | Active |
| US6576805B2 | Cat cracker gas plant process for increased olefins recovery | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6395952B1 | Chemical absorption process for recovering olefins from cracked gases | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7482502B2 | Process for cracking hydrocarbons using improved furnace reactor tubes | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6576132B2 | Quench water pretreat process | Chemistry; Metallurgy | 11 | Expired |
| US6528027B1 | Cracking furance having radiant heating tubes the inlet and outlet legs of which are paired within the firebox | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US6692552B2 | Riser termination device | Performing Operations; Transporting | 9 | Expired |
| US8496786B2 | Heavy feed mixer | Chemistry; Metallurgy | 8 | Active |
| US7429363B2 | Riser termination device | Chemistry; Metallurgy | 7 | Active |
| US7591939B2 | Integrated desulfurization and FCC process | Chemistry; Metallurgy | 7 | Expired |
| US8309776B2 | Method for contaminants removal in the olefin production process | Chemistry; Metallurgy | 6 | Active |
| US7744067B2 | Three phase vapor distributor | Performing Operations; Transporting | 5 | Active |
| US7772449B2 | Removal of acid gases and sulfur compounds from hydrocarbon gas streams in a caustic tower | Emerging Cross-Sectional Technologies | 5 | Active |
| US6297414A | Deep selective hydrogenation process | Chemistry; Metallurgy | 5 | Expired |
| US7273543B2 | Process and apparatus for controlling catalyst temperature in a catalyst stripper | Performing Operations; Transporting | 5 | Expired |
| US6751527B2 | Heat and material balance method of process control for petrochemical plants and oil refineries | Chemistry; Metallurgy | 4 | Expired |
| US6482312B1 | Particulate solids cracking apparatus and process | Performing Operations; Transporting | 4 | Expired |
| US6905591B2 | Deep catalytic cracking process | Chemistry; Metallurgy | 3 | Expired |
| US8349753B2 | Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units | Emerging Cross-Sectional Technologies | 2 | Active |
| US7793859B2 | Fluidized catalytic cracking feed nozzle | Performing Operations; Transporting | 2 | Active |
| US7048041B2 | Systems and apparatuses for stabilizing reactor furnace tubes | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US8383051B2 | Separating and stripping apparatus for external FCC risers | Chemistry; Metallurgy | 1 | Active |
| US7402290B2 | Condensation reduction in fluid mixing | Performing Operations; Transporting | 1 | Expired |
| US6923940B2 | Riser termination device | Performing Operations; Transporting | 1 | Expired |
| US7951739B2 | Bathtub-type spent catalyst distributor for effective counter-current regeneration in fluid catalytic cracking units | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.