Henry Edward Howard
79Patents
17h-index
35Co-inventors
84Inventor score
Filing activity: Feb 27, 1992 → Apr 8, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6477859B2 | Integrated heat exchanger system for producing carbon dioxide | Emerging Cross-Sectional Technologies | 91 | Expired |
| US5927103A | Carbon dioxide production system with integral vent gas condenser | Emerging Cross-Sectional Technologies | 50 | Expired |
| US6035662A | Method and apparatus for enhancing carbon dioxide recovery | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6210467A | Carbon dioxide cleaning system with improved recovery | Emerging Cross-Sectional Technologies | 34 | Expired |
| US7871457B2 | Carbon dioxide production method | Emerging Cross-Sectional Technologies | 28 | Active |
| US6694763B2 | Method for operating a transcritical refrigeration system | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US6438994B1 | Method for providing refrigeration using a turboexpander cycle | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US5758515A | Cryogenic air separation with warm turbine recycle | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US5802873A | Cryogenic rectification system with dual feed air turboexpansion | Emerging Cross-Sectional Technologies | 22 | Expired |
| US6557361B1 | Method for operating a cascade refrigeration system | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US6070431A | Distillation system for producing carbon dioxide | Emerging Cross-Sectional Technologies | 21 | Expired |
| US5313800A | Process for maximizing the recovery of argon from an air separation system at high argon recovery rates | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5469710A | Cryogenic rectification system with enhanced argon recovery | Emerging Cross-Sectional Technologies | 20 | Expired |
| US8020408B2 | Separation method and apparatus | Emerging Cross-Sectional Technologies | 20 | Active |
| US6595009B1 | Method for providing refrigeration using two circuits with differing multicomponent refrigerants | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US7231784B2 | Method for producing liquefied natural gas | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US7666251B2 | Carbon dioxide purification method | Emerging Cross-Sectional Technologies | 18 | Active |
| US5233838A | Auxiliary column cryogenic rectification system | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6881354B2 | Multicomponent refrigerant fluids for low and cryogenic temperatures | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US5628207A | Cryogenic Rectification system for producing lower purity gaseous oxygen and high purity oxygen | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5305611A | Cryogenic rectification system with thermally integrated argon column | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5228296A | Cryogenic rectification system with argon heat pump | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5431023A | Process for the recovery of oxygen from a cryogenic air separation system | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US9038413B2 | Separation method and apparatus | Emerging Cross-Sectional Technologies | 10 | Active |
| US7228714B2 | Natural gas liquefaction system | Mechanical Engineering; Lighting; Heating | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.