Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8152898 | Helium recovery process | Ravi Prasad, Carl Joseph Heim | 2012-04-10 |
| 6205813 | Cryogenic rectification system for producing fuel and high purity methane | Minish Mahendra Shah, Raymond Francis Drnevich | 2001-03-27 |
| 5787730 | Thermal swing helium purifier and process | Carl Joseph Heim | 1998-08-04 |
| 5771714 | Cryogenic rectification system for producing higher purity helium | Rae Lynn Emley | 1998-06-30 |
| 5638698 | Cryogenic system for producing nitrogen | Mary Anne Knight | 1997-06-17 |
| 5339641 | Cryogenic liquid nitrogen production system | Mary J. Mathis | 1994-08-23 |
| 5329775 | Cryogenic helium production system | Brian C. Fiedler, James R. Handley | 1994-07-19 |
| 5051120 | Feed processing for nitrogen rejection unit | Ravindra F. Pahade | 1991-09-24 |
| 5026408 | Methane recovery process for the separation of nitrogen and methane | John B. Saunders | 1991-06-25 |
| 4664686 | Process to separate nitrogen and methane | Ravindra F. Pahade, James R. Handley | 1987-05-12 |
| 4592767 | Process for separating methane and nitrogen | Ravindra F. Pahade, John B. Saunders | 1986-06-03 |
| 4479871 | Process to separate natural gas liquids from nitrogen-containing natural gas | Ravindra F. Pahade, John B. Saunders | 1984-10-30 |