|
| US4193288 | 21 Aug 1978 | 18 Mar 1980 | | Apparatus for calibrating instruments for granulometric recording |
| US4895034 | 28 Jul 1987 | 23 Jan 1990 | Amherst Process Instruments, Inc. | Powder disperser for aerodynamic particle sizing system |
| US4938592 | 28 Jul 1987 | 3 Jul 1990 | Amherst Process Instruments, Inc. | Beam forming and sensing apparatus for aerodynamic particle sizing system |
| US5522555 | 1 Mar 1994 | 4 Jun 1996 | Amherst Process Instruments, Inc. | Dry powder dispersion system |
| US7114375 | 13 Jan 2004 | 3 Oct 2006 | Battelle Memorial Institute | Process monitoring and particle characterization with ultrasonic backscattering |