|
| US4336045 | 29 juin 1981 | 22 juin 1982 | Union Carbide Corporation | Acetylene removal in ethylene and hydrogen separation and recovery process |
| US4735704 | 16 mai 1986 | 5 avr. 1988 | Santa Fe Braun Inc. | Liquid removal enhancement |
| US4846863 | 18 févr. 1988 | 11 juil. 1989 | Costain Petrocarbon Limited | Separation of hydrocarbon mixtures |
| US5358469 | 5 août 1991 | 25 oct. 1994 | Ultraflex Systems, Inc. | Dynamic splint |
| US5421167 | 1 avr. 1994 | 6 juin 1995 | The M. W. Kellogg Company | Enhanced olefin recovery method |
| US5444176 | 28 oct. 1992 | 22 août 1995 | Exxon Chemical Patents Inc. | Process for recovering olefins from cat-cracked gas without accumulating undesirable oxides of nitrogen |
| US5749840 | 31 oct. 1995 | 12 mai 1998 | Ultraflex Systems, Inc. | Dynamic splint |