Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667339 | Cryogenic method and system for remediating contaminataed earth | — | 1997-09-16 |
| 5551799 | Cryogenic method and system for remediating contaminated earth | — | 1996-09-03 |
| 5507149 | Nonporous liquid impermeable cryogenic barrier | Roger Leger, Ronald K. Krieg | 1996-04-16 |
| 5324137 | Cryogenic method and system for remediating contaminated earth | — | 1994-06-28 |