Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11933403 | Metallic sealing assembly for sealing between a rotating shaft and a fixed frame | Jean-François Juliaa, Michel Lefrancois, Christophe Darles, Olivier Constant | 2024-03-19 |
| 11644103 | Metal sealing system for triple eccentricity butterfly valve | Michel Lefrancois, Etienne Boyer, Marin Tessier, Jean-Jacques Darque, Bertrand Thevenon | 2023-05-09 |
| 10428959 | Assembly for compressing a ball valve seat | Florent Ledrappier, Michel Lefrancois | 2019-10-01 |
| 9157531 | Brush-type circular seal | Frédéric Sauvinet, Olivier Constant, Philippe Reynaud, Christophe Mengelle, Michel Lefrancois | 2015-10-13 |
| 8840117 | Sealing element having an elastic tapered washer and casing to exert pressure | Ludovic Morice, Michel Lefrancois, Jean-François Juliaa | 2014-09-23 |