|
| US4012310 | 11 Sep 1975 | 15 Mar 1977 | Progressive Equipment Corporation | Electrostatic water treatment system |
| US4561953 | 20 Jun 1984 | 31 Dec 1985 | Battelle Memorial Institute | Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field |
| US4747920 | 19 Nov 1985 | 31 May 1988 | Battelle Memorial Institute | Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field |
| US4802964 | 8 Dec 1986 | 7 Feb 1989 | Battelle Memorial Institute | Liquid separation process for suspensions by a pulsating electrical current |
| US4988427 | 30 Apr 1990 | 29 Jan 1991 | | Liquid/solid separation unit |
| US5114560 | 28 Aug 1989 | 19 May 1992 | | Apparatus and method for removal of liquids |
| US5292421 | 25 Feb 1992 | 8 Mar 1994 | | Apparatus and method for removal of liquids |
| US7780833 | 26 Jul 2005 | 24 Aug 2010 | | Electrochemical ion exchange with textured membranes and cartridge |
| US7959780 | 26 Jul 2004 | 14 Jun 2011 | Emporia Capital Funding LLC | Textured ion exchange membranes |