DD

Dennis A. Duncan

SE Stone & Webster Engineering: 6 patents #8 of 74Top 15%
UE US Dept of Energy: 3 patents #296 of 5,099Top 6%
IT Institute Of Gas Technology: 1 patents #70 of 144Top 50%
Overall (All Time): #524,856 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6383455 Ceramic slot reactor for ethylene production Joseph M. Gondolfe 2002-05-07
6312652 Ceramic dip pipe and tube reactor for ethylene production 2001-11-06
5976355 Low residence time catalytic cracking process Axel Johnson, Robert J. Gartside, Joseph L. Ross 1999-11-02
4663019 Olefin production from heavy hydrocarbon feed Robert J. Gartside, Axel Johnson, Joseph L. Ross 1987-05-05
4585544 Hydrocarbon pretreatment process for catalytic cracking Robert J. Gartside, Axel Johnson, Joseph L. Ross, Edwin J. Bassler 1986-04-29
4585543 Method for recovering hydrocarbons from solids Herman Woebeke 1986-04-29
4234407 Reactor and method for hydrocracking carbonaceous material Justin L. Beeson, R. Donald Oberle, Henry A. Dirksen 1980-11-18
4234408 Process for hydrocracking carbonaceous material in liquid carrier 1980-11-18
4225414 Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock 1980-09-30
4209490 Reactor coking simulator Henry A. Dirksen 1980-06-24