Sigismond Franckowiak
20Patents
12h-index
22Co-inventors
77Inventor score
Filing activity: Dec 16, 1975 → May 7, 1993
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4088736A | Process for purifying a gas containing hydrogen sulfide and contact masses usable therefor | Chemistry; Metallurgy | 91 | Expired |
| US4609456A | Process for converting heavy petroleum residues to hydrogen and gaseous distillable hydrocarbons | Chemistry; Metallurgy | 74 | Expired |
| US4044114A | Process for purifying a gas containing sulfur compounds | Chemistry; Metallurgy | 28 | Expired |
| US5021143A | Process of fractionation and extraction of hydrocarbons allowing obtaining a cut of increased octane index and a kerosene of improved smoke point | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4251495A | Process for purifying a hydrogen sulfide containing gas | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4310497A | Process for purifying a hydrogen sulfide containing gas | Chemistry; Metallurgy | 20 | Expired |
| US4421725A | Process for purifying a gas containing hydrogen sulfide and carbon dioxide and apparatus therefor | Performing Operations; Transporting | 19 | Expired |
| US4163043A | Process for removing H.sub.2 S and CO.sub.2 from gases and regenerating the adsorbing solution | Chemistry; Metallurgy | 18 | Expired |
| US4756821A | Method for the liquid phase hydrotreatment of heavy hydrocarbons in the presence of a dispersed catalyst | Chemistry; Metallurgy | 16 | Expired |
| US4220634A | Process for converting ammonium imidodisulfate, ammonium sulfamate and ammonium dithionate to sulfur dioxide and ammonia | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4048293A | Process for purifying a sulfur dioxide containing gas | Chemistry; Metallurgy | 13 | Expired |
| US5186909A | Reaction chamber comprising a calender reactor and means for bedding the flow of a heat-carrying fluid | Performing Operations; Transporting | 12 | Expired |
| US4855117A | Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with elemental sulfur | Performing Operations; Transporting | 6 | Expired |
| US4405442A | Process for converting heavy oils or petroleum residues to gaseous and distillable hydrocarbons | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5498326A | Process for and apparatus for catalytic cracking in two successive reaction zones | Chemistry; Metallurgy | 6 | Expired |
| US4164543A | Process for regenerating brines containing sodium sulfites and sulfates | Performing Operations; Transporting | 3 | Expired |
| US4180550A | Process for purifying a sulfur dioxide containing gas by washing with an ammonia aqueous solution | Performing Operations; Transporting | 2 | Expired |
| US4519895A | Process for converting a carbonaceous material to lower paraffinic hydrocarbons and monocyclic aromatic hydrocarbons | Chemistry; Metallurgy | 2 | Expired |
| US4146579A | Process for converting sulfitic solutions by means of ammonium bisulfate with SO.sub.2 production | Chemistry; Metallurgy | 1 | Expired |
| US4781903A | Process for removing sulfur oxides from a gas by means of an absorption mass regenerable by reaction with elemental sulfur | Performing Operations; Transporting | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.