Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5916262 | Cryogenic rectification system for producing low purity oxygen and high purity oxygen | Neil M. Prosser, James R. Handley, Brien Scott Wierzchowski | 1999-06-29 |
| 5881570 | Cryogenic rectification apparatus for producing high purity oxygen or low purity oxygen | Raymond Francis Drnevich, Minish Mahendra Shah | 1999-03-16 |
| 5163296 | Cryogenic rectification system with improved oxygen recovery | John H. Ziemer | 1992-11-17 |
| 5051120 | Feed processing for nitrogen rejection unit | James J. Maloney | 1991-09-24 |
| 4987744 | Cryogenic distillation with unbalanced heat pump | James R. Handley | 1991-01-29 |
| 4957524 | Air separation process with improved reboiler liquid cleaning circuit | John H. Ziemer, John K. Howell, Jr. | 1990-09-18 |
| 4701201 | Process to produce cold helium gas for liquefaction | Thomas C. Hanson, Theodore F. Fisher, Joseph Alfred Weber | 1987-10-20 |
| 4664686 | Process to separate nitrogen and methane | James J. Maloney, James R. Handley | 1987-05-12 |
| 4592767 | Process for separating methane and nitrogen | John B. Saunders, James J. Maloney | 1986-06-03 |
| 4501600 | Process to separate nitrogen from natural gas | — | 1985-02-26 |
| 4479871 | Process to separate natural gas liquids from nitrogen-containing natural gas | John B. Saunders, James J. Maloney | 1984-10-30 |
| 4453957 | Double column multiple condenser-reboiler high pressure nitrogen process | John H. Ziemer, Harry Cheung | 1984-06-12 |
| 4439220 | Dual column high pressure nitrogen process | Walter Joseph Olszewski, John H. Ziemer | 1984-03-27 |
| 4416677 | Split shelf vapor air separation process | — | 1983-11-22 |
| 4407135 | Air separation process with turbine exhaust desuperheat | — | 1983-10-04 |