|
| US3948625 | 24 Jul 1972 | 6 Apr 1976 | Environmental Master Systems, Inc. | Irradiation and electrostatic separator |
| US4020352 | 10 Jul 1975 | 26 Apr 1977 | Leybold-Heraeus GmbH & Co. KG | System for irradiating flowable material |
| US4233030 | 6 Mar 1978 | 11 Nov 1980 | National Research Development Corporation | Methods and apparatus for liquid chromatography |
| US4317041 | 2 Jun 1980 | 23 Feb 1982 | | Multichamber photoreactor |
| US4676896 | 17 Jan 1986 | 30 Jun 1987 | | Faucet mounted purifier |
| US4769131 | 3 Oct 1986 | 6 Sep 1988 | Pure Water Technologies | Ultraviolet radiation purification system |
| US4968891 | 22 Nov 1989 | 6 Nov 1990 | | Disinfecting a fluid with ultraviolet radiation |
| US5461656 | 3 May 1994 | 24 Oct 1995 | Ruxam, Inc. | Microwave X-ray source and methods of sterilization |
| US5536395 | 22 Mar 1993 | 16 Jul 1996 | Amway Corporation | Home water purification system with automatic disconnecting of radiant energy source |
| US5698091 | 18 Sep 1996 | 16 Dec 1997 | Amway Corporation | Home water purification system with filter end of life monitor |
| US5853572 | 25 Jan 1997 | 29 Dec 1998 | Amway Corporation | Home water purification system |
| US5897785 | 27 May 1997 | 27 Apr 1999 | | Process for treating animal waste |
| US5997812 | 1 Aug 1996 | 7 Dec 1999 | Coolant Treatment Systems, L.L.C. Administrators of The Tulane Educational Fund | Methods and apparatus for the application of combined fields to disinfect fluids |
| US6083387 | 20 Jun 1996 | 4 Jul 2000 | Burnham Technologies Ltd. | Apparatus for the disinfection of fluids |
| US6469308 | 1 May 2001 | 22 Oct 2002 | | Ultraviolet radiated water treatment tank |
| US8153058 | 11 Apr 2005 | 10 Apr 2012 | | Device for the treatment of a liquid or gaseous medium by means of UV radiation |