Francisco Quisumbing is a Filipino chemist who finished studies from the University of Chicago as American-sponsored pension ado. Following WWII, he tried to systematize the Philippine Ink Corporation under the Japanese Reparations Program, but was upset by what he labeled as too much administration involvement in private venture.
Dr. Quisumbing is famous for his invention of the Quink trademark ink that is used in Parker Pens. Quink stands for Quisumbing Ink. It cleans the pen as it writes, and dries quickly on paper, but remains liquid inside the pen.