Who is quisumbing?

Answer 1

Taken from www.scitech.gov.ph (see link to the left):

Inventor of the Quink trademark ink, which is used in Parker Pens. Quisumbing is a Filipino chemist who graduated from the University of Chicago as an American-sponsored pensionado. After WW II, he tried to organize the Philippine Ink Corporation under the Japanese Reparations Program, but was frustrated by what he labeled as "too much government intervention in private enterprise." Quink stands for Quisumbing Ink. It cleans the pen as it writes, and dries quickly on paper, but remains liquid inside the pen.