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Patent applications and USPTO patent grants for Duddy; John.The latest application filed is for "carbon black feedstock from direct coal liquefaction".
Patent | Date |
---|---|
Carbon black feedstock from direct coal liquefaction Grant 10,400,108 - Colyar , et al. Sep | 2019-09-03 |
Carbon Black Feedstock from Direct Coal Liquefaction App 20170313886 - Colyar; James J. ;   et al. | 2017-11-02 |
Process for multistage residue hydroconversion integrated with straight-run and conversion gasoils hydroconversion steps Grant 7,938,952 - Colyar , et al. May 10, 2 | 2011-05-10 |
Selective heavy gas oil recycle for optimal integration of heavy oil conversion and vacuum gas oil treating Grant 7,938,953 - Colyar , et al. May 10, 2 | 2011-05-10 |
Process for multistage residue hydroconversion integrated with staight-run and conversion gasoils hydroconversion steps App 20090288986 - Colyar; James J. ;   et al. | 2009-11-26 |
Selective heavy gas oil recycle for optimal integration of heavy oil conversion and vacuum gas oil treating App 20090288984 - Colyar; James J. ;   et al. | 2009-11-26 |
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