Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6402805 | Method for an improved energy input into a scrap bulk | Karl Brotzmann | 2002-06-11 |
| RE37014 | Combined installation of a metal production unit and a unit for the separation of air gas | Alain Guillard, Marc Buffenoir | 2001-01-16 |
| 6030431 | Method for an improved energy input into a scrap bulk | Karl Brotzmann | 2000-02-29 |
| 5538534 | Combined installation of a metal production unit and a unit for the separation of air gas | Alain Guillard, Marc Buffenoir | 1996-07-23 |
| 5136853 | Domestic refrigerator having a compartment supplied with an oxygen starved gas and process for feeding such a compartment | Philippe Girardon | 1992-08-11 |
| 4834779 | Process for membrane seperation of gas mixtures | Joseph E. Paganessi, Richard A. Sauer | 1989-05-30 |