Inventor · Bartlesville, OK, US

Lloyd E. Gardner

30Patents
16h-index
18Co-inventors
74Inventor score

Filing activity: Jun 28, 1974 → Jan 9, 1989

Most-cited inventions

PatentTitleAreaCited byStatus
US4313820A Hydrodesulfurization of organic sulfur compounds and hydrogen sulfide removal with incompletely sulfided zinc titanate materials Chemistry; Metallurgy 73 Expired
US4762814A Hydrotreating catalyst and process for its preparation Performing Operations; Transporting 50 Expired
US4693991A Hydrotreating catalyst composition Chemistry; Metallurgy 39 Expired
US4888316A Preparation of hydrotreating catalyst from spent catalyst Performing Operations; Transporting 39 Expired
US4287050A Catalytic hydrodesulfurization of organic compounds employing alumina promoted with zinc titanate, cobalt and molybdenum as the catalytic agent Performing Operations; Transporting 32 Expired
US4707246A Hydrotreating catalyst and process Performing Operations; Transporting 31 Expired
US4655906A Hydrotreating process employing a novel catalytic composition Chemistry; Metallurgy 29 Expired
US4371507A Catalytic hydrogenation of olefins, hydrodesulfurization of organic sulfur compounds and/or selective removal of hydrogen sulfide from fluid streams Chemistry; Metallurgy 29 Expired
US4657663A Hydrotreating process employing a three-stage catalyst system wherein a titanium compound is employed in the second stage Performing Operations; Transporting 27 Expired
US4975399A Regeneration of hydrotreating catalyst Chemistry; Metallurgy 24 Expired
US4333855A Promoted zinc titanate as catalytic agent Performing Operations; Transporting 23 Expired
US4371728A Selective removal of olefins over zinc titanate promoted with selected metals Chemistry; Metallurgy 18 Expired
US4389304A Catalytic hydrodesulfurization or hydrodenitrogenation of organic compounds employing alumina promoted with zinc, titanium, cobalt and molybdenum as the catalytic agent Chemistry; Metallurgy 18 Expired
US4154583A Automated temperature programmed preparative chromatography Physics 17 Expired
US4372842A Catalytic hydrocracking, hydrodesulfurization, and/or hydrodenitrogenation of organic compounds employing promoted zinc titanate and a zeolite as the catalytic agent Performing Operations; Transporting 16 Expired
US4394301A Catalytic hydrocracking, hydrodesulfurization, and/or hydrodenitrogenation of organic compounds employing promoted zinc titanate and a zeolite as the catalytic agent Chemistry; Metallurgy 16 Expired
US4895816A Support material containing catalyst for fixed hydrofining beds Performing Operations; Transporting 15 Expired
US4522709A Catalytic hydrodesulfurization or hydrodenitrogenation Chemistry; Metallurgy 15 Expired
US4376698A Catalytic hydrodesulfurization of organic compounds employing promoted zinc titanate Chemistry; Metallurgy 13 Expired
US4376699A Catalytic hydrocracking, hydrodesulfurization, and/or hydrodenitrogenation of organic compounds employing promoted zinc titanate and a zeolite as the catalytic agent Chemistry; Metallurgy 12 Expired
US4371458A Catalytic compounds employing alumina promoted with zinc, titanium, cobalt and molybdenum as the catalytic agent Performing Operations; Transporting 11 Expired
US4389305A Catalytic hydrodenitrogenation of organic compounds employing promoted zinc titanate Chemistry; Metallurgy 11 Expired
US4324647A Catalytic hydrocracking, hydrodesulfurization, and/or hydrodenitrogenation of organic compounds employing promoted zinc titanate and a zeolite as the catalytic agent Chemistry; Metallurgy 8 Expired
US4652546A Hydrogel derived catalyst of zinc titanate and alumina promoted with cobalt and molybdenum for hydrodesulfurization or hydrodenitrogenation Performing Operations; Transporting 8 Expired
US4313017A Selective hydrogenation of polynuclear aromatic reactants Chemistry; Metallurgy 7 Expired

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