F. J. Duarte, Laser sensitometer using multiple-prism beam
expansion and a polarizer, US Patent 6236461 (22nd of May, 2001).
F. J. Duarte and R. O. James, Dye-doped polymer nanoparticle gain
medium, US Patent 6888862 (3rd of May, 2005).
F. J. Duarte, B. A. Reed, and C. J. Burak, Laser sensitometer, US Patent 6903824 (7th of June, 2005).
B. E. Kruschwitz, F. J. Duarte, A. F. Kurtz, and J. P. Spoonhower, External cavity organic laser, US Patent 7065115 (20th of June, 2006).
Note: the patents described as laser sensitometer provide the dual description of a laser printer. In them, laser beams are used to write on photo sensitive imaging materials. US Patent 6903824 refers to a multiple-wavelength high-speed laser system that exposes imaging materials in the nanosecond regime. The first three patents, listed here, have been reduced to practice.