Robert J. Hogan
21Patents
10h-index
31Co-inventors
75Inventor score
Filing activity: Sep 29, 1975 → Jun 23, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4885080A | Process for demetallizing and desulfurizing heavy crude oil | Chemistry; Metallurgy | 260 | Expired |
| US7272529B2 | Dual wall turbine blade ultrasonic wall thickness measurement technique | Physics | 70 | Expired |
| US4564441A | Hydrofining process for hydrocarbon-containing feed streams | Chemistry; Metallurgy | 50 | Expired |
| US4557823A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 37 | Expired |
| US4560468A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 31 | 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 |
| US4167532A | Dehydrogenation of organic compounds | Chemistry; Metallurgy | 17 | Expired |
| US8716627B2 | Welding systems and methods | Performing Operations; Transporting | 11 | Active |
| US4578179A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 11 | Expired |
| US4578180A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 10 | Expired |
| US4612110A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 9 | Expired |
| US4366970A | Theft prevention method and apparatus for wellheads | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US4582594A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 6 | Expired |
| US4600504A | Hydrofining process for hydrocarbon containing feed streams | Chemistry; Metallurgy | 5 | Expired |
| US4715948A | Improving the life of a catalyst used to process hydrocarbon containing feed streams | Chemistry; Metallurgy | 3 | Expired |
| US9027404B2 | Ultrasonic non-destructive evaluation methods for friction-welded blisks | Physics | 2 | Active |
| US9194842B2 | Thermal acoustic imaging methods, systems, and apparatus for detecting defects in an object | Physics | 2 | Active |
| US4727165A | Catalytically hydrogenated decomposible molybdenum compounds as oil hydrofining agents | Chemistry; Metallurgy | 1 | Expired |
| US9228980B2 | Non-destructive evaluation methods for aerospace components | Physics | 1 | Active |
| US11976999B2 | Chain monitoring systems and methods | Physics | 0 | Active |
| US4218343A | Dehydrogenation of organic compounds | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.