Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE36577 | Air distillating column with cross-undulating lining | Jean-Yves Lehman | 2000-02-22 |
| 5224351 | Air distillating column with cross-undulating lining | Jean-Yves Lehman | 1993-07-06 |
| 5132055 | Fluid distributor for heat and material exchange column, for example with lining, and column provided with such distributor | Jean-Francois Alleaume, Patrice Andre, Christian Barbe, Maurice Bosquain, Jean-Yves Lehman +1 more | 1992-07-21 |