Frederic Hoffmann
24Patents
10h-index
26Co-inventors
75Inventor score
Filing activity: May 5, 1986 → Jul 26, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4965232A | Process for fluidized-bed catalyst regeneration | Performing Operations; Transporting | 39 | Expired |
| US6454948B2 | Distributor-mixer-extractor of fluids and associated process | Performing Operations; Transporting | 28 | Expired |
| US6660895B1 | Process for the production of aromatic compounds in a moving bed including a reduction of the catalyst | Chemistry; Metallurgy | 27 | Expired |
| US5686049A | Heat exchange apparatus for solid particles for double regeneration in catalytic cracking | Chemistry; Metallurgy | 19 | Expired |
| US5344554A | Downflow fluid catalytic cracking process and apparatus | Chemistry; Metallurgy | 16 | Expired |
| US4967843A | Device for producing an effluent contained in a submarine geological formation and production method employed using such a device | Fixed Constructions | 15 | Expired |
| US6048814A | Process and unit for regeneration of a catalyst for the production of aromatic compounds or for reforming | Chemistry; Metallurgy | 14 | Expired |
| US5120691A | Process for regulating or checking the thermal level of a pulverulent solid incorporating a heat exchanger with fluidized bed compartments | Performing Operations; Transporting | 12 | Expired |
| US6426052B1 | Vessel for regenerating a catalyst for the production of aromatic compounds or for reforming, with improved oxychlorination | Chemistry; Metallurgy | 10 | Expired |
| US6277335A | Process and unit for regeneration of a catalyst for the production of aromatic compounds or for reforming | Chemistry; Metallurgy | 10 | Expired |
| US5449496A | Downflow fluid catalytic cracking process and apparatus | Chemistry; Metallurgy | 8 | Expired |
| US4860825A | Device for positioning a tool or instrument in a duct | Fixed Constructions | 8 | Expired |
| US6919048B2 | Thin multi-stage catalytic reactor with internal heat exchanger, and use thereof | Performing Operations; Transporting | 7 | Expired |
| US5286690A | Method of heat exchange of solid particles for regeneration in catalytic cracking | Performing Operations; Transporting | 6 | Expired |
| US4723890A | Articulated jet pump, usable more particularly in TFL technique for activating hydrocarbon or water producing wells | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6224762A | Distributor-mixer-extractor of fluids and associated process | Performing Operations; Transporting | 6 | Expired |
| US5324696A | Process and heat exchange apparatus for solid particles for double regeneration in catalytic cracking | Chemistry; Metallurgy | 4 | Expired |
| US5773379A | Thermal regulation process for a solid in a heat exchanger using cylindrical tube surfaces | Performing Operations; Transporting | 3 | Expired |
| US6875338B2 | Process for endothermic conversion of hydrocarbons, its uses, and a unit for carrying out the process | Emerging Cross-Sectional Technologies | 3 | Expired |
| US7070742B2 | Reactor for chemical conversion of a feedstock in the presence of a diluent, with heat inputs and feedstock/catalyst cross-circulation | Performing Operations; Transporting | 2 | Expired |
| US7976698B2 | Integration of the reduction of the catalyst of a catalytic conversion process and the regeneration of adsorbent masses that intervene in the purification of the hydrogen that is necessary for reduction | Performing Operations; Transporting | 0 | Expired |
| US11878933B2 | Protective layer for a refractory product | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US6677494B2 | Process and device for the production of aromatic compounds including a reduction of the catalyst | Chemistry; Metallurgy | 0 | Expired |
| US6284939A | Process for liquid-phase conversion with a moving-bed catalyst using a stripper-lift | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.