You are hereHome › 540/145 (x) › 514/19.3 (x) › 514/410 (x) › University of Toledo U.S. Patents (x) › Search results (1 - 2 of 2) Title Compositions of porphyrin derivatives Creator The University of Toledo; Medical College of Ohio Title Use of purpurins, chlorins and purpurin- and chlorin-containing compositions Creator The University of Toledo; Medical College of Ohio; St. Vincent Medical Center