Roger Johnson
15Patents
5h-index
11Co-inventors
63Inventor score
Filing activity: Oct 8, 1982 → Jul 1, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4442047A | Multi-nozzle spray desuperheater | Emerging Cross-Sectional Technologies | 45 | Expired |
| US4640305A | High temperature, zero leakage packing assembly | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6137823A | Bi-metal panel for electric arc furnace | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US4712769A | High temperature balanced valve trim | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5740196A | End caps and elbows for cooling coils for an electric arc furnance | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5197080A | End cap for cooling coils for an arc furnace | Emerging Cross-Sectional Technologies | 3 | Expired |
| US11395558B2 | Beverage preparation machine and gasket arrangement | Human Necessities | 2 | Active |
| US7235180B2 | Sulfate-selective anion exchange resins for use in combination with TRSS resins in feed water treatment | Performing Operations; Transporting | 0 | Expired |
| US10421077B2 | Large capacity upright tilting wet stone grinder | Performing Operations; Transporting | 0 | Active |
| US7294654B2 | Method of making thermally regenerable salt sorbent resins | Chemistry; Metallurgy | 0 | Expired |
| US8535531B2 | Halogenated resin beds | Chemistry; Metallurgy | 0 | Active |
| US12161246B2 | Air preheating of brew chamber | Human Necessities | 0 | Active |
| US11839325B2 | Beverage preparation machine and gasket arrangement | Human Necessities | 0 | Active |
| US12156607B2 | Beverage preparation machine with inlet arrangement | Human Necessities | 0 | Active |
| US12167812B2 | Beverage preparation machine and gasket arrangement | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.