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| Number | Title | Issue Date |
| 7796254 | Method and apparatus for determining particle size and composition of mixtures A method for determining characteristics of a material includes illuminating the material with coherent light so as to produce scattered light; autocorrelating the scattered light; preprocessing a signal representative of the scattered light to produce a processed s... | 09/14/2010 |
| 7336358 | Method and apparatus for determining particle size and composition of mixtures Method and apparatus for evaluating one or more materials in accordance with size of particles. The method includes evaluating a spectrum of light reflected from a first group of particles; evaluating a spectrum of light reflected from a second group of particle; co... | 02/26/2008 |
