James R. Dray
20Patents
9h-index
23Co-inventors
75Inventor score
Filing activity: Jun 19, 1990 → Jul 7, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5265429A | Cryogenic air separation system for producing gaseous oxygen | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5069698A | Xenon production system | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5108476A | Cryogenic air separation system with dual temperature feed turboexpansion | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5148680A | Cryogenic air separation system with dual product side condenser | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5019144A | Cryogenic air separation system with hybrid argon column | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5098456A | Cryogenic air separation system with dual feed air side condensers | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5546767A | Cryogenic rectification system for producing dual purity oxygen | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US5114452A | Cryogenic air separation system for producing elevated pressure product gas | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5303556A | Single column cryogenic rectification system for producing nitrogen gas at elevated pressure and high purity | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6378333B1 | Cryogenic system for producing xenon employing a xenon concentrator column | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6272884A | Rapid restart system for cryogenic air separation plant | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US5235816A | Cryogenic rectification system for producing high purity oxygen | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5802872A | Cryogenic air separation with combined prepurifier and regenerators | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6327873A | Cryogenic rectification system for producing ultra high purity oxygen | Emerging Cross-Sectional Technologies | 2 | Expired |
| US10105637B2 | Adsorbent regeneration method | Emerging Cross-Sectional Technologies | 2 | Active |
| US10408536B2 | System and method for recovery of neon and helium from an air separation unit | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US10295254B2 | System and method for recovery of non-condensable gases such as neon, helium, xenon, and krypton from an air separation unit | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US6314757A | Cryogenic rectification system for processing atmospheric fluids | Emerging Cross-Sectional Technologies | 1 | Expired |
| US11293671B2 | Refrigeration cycle for liquid oxygen densification | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10808967B2 | Refrigeration cycle for liquid oxygen densification | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.