Copyright © Philip M. Parker, INSEAD. Terms of Use.

| Year | Description |
| 1997 | Invention patented by John Giles Langan and Howard Paul Jr. Withers on November 16th, 1997. Abstract: A process for abating NF.sub.3 by contacting it with a metal oxalate or carbonate. |
| Source: selected by the editor from original sources. | |
Copyright © Philip M. Parker, INSEAD. Terms of Use.