Inventor · Wheaton, IL, US

Frederick T. Clark

20Patents
9h-index
11Co-inventors
64Inventor score

Filing activity: Mar 30, 1990 → May 24, 1996

Most-cited inventions

PatentTitleAreaCited byStatus
US5221656A Hydroprocessing catalyst Performing Operations; Transporting 24 Expired
US5151172A Distillate hydrogenation Chemistry; Metallurgy 21 Expired
US5147526A Distillate hydrogenation Chemistry; Metallurgy 19 Expired
US5087596A Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Performing Operations; Transporting 18 Expired
US5273645A Manufacture of lubricating oils Chemistry; Metallurgy 13 Expired
US5154819A Hydroprocessing using regenerated spent heavy hydrocarbon catalyst Emerging Cross-Sectional Technologies 13 Expired
US5308814A Distillate hydrogenation catalyst Chemistry; Metallurgy 11 Expired
US5009771A Hydroconversion process using mixed catalyst system Performing Operations; Transporting 9 Expired
US5100855A Mixed catalyst system for hyproconversion system Performing Operations; Transporting 9 Expired
US5837128A Method for grading cylindrical catalyst particles in a bed to reduce pressure drop Performing Operations; Transporting 8 Expired
US5275990A Process for regenerating a spent resid hydroprocessing catalyst using a group IIA metal Emerging Cross-Sectional Technologies 7 Expired
US5346612A Distillate hydrogenation utilizing a catalyst comprising platinum, palladium, and a beta zeolite support Performing Operations; Transporting 6 Expired
US5071538A Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Chemistry; Metallurgy 5 Expired
US5232885A Process for regenerating a spent resin hydroprocessing catalyst using a group IV metal Emerging Cross-Sectional Technologies 5 Expired
US4994423A Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Emerging Cross-Sectional Technologies 5 Expired
US5225383A Distillate hydrogenation catalyst Chemistry; Metallurgy 5 Expired
US5346874A Distillate hydrogenation Performing Operations; Transporting 5 Expired
US4997799A Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst Emerging Cross-Sectional Technologies 3 Expired
US5271828A Distillate hydrogenation Performing Operations; Transporting 2 Expired
US5494870A Distillate hydrogenation catalyst Performing Operations; Transporting 2 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.