The National Academy of Inventors has named Brown University professors Leon Cooper and Edith Mathiowitz among its 143-member class of 2013 fellows, the Tampa, Fla., organization of about 100 universities and other research nonprofits announced Dec. 10. “The academic inventors and innovators elected to the rank of NAI Fellow are named inventors on U.S. patents and were nominated by their peers for outstanding contributions to innovation,” according to the announcement. Cooper, professor of physics, holds four patents assigned to Brown in neural networks, signal processing and sonar. He is a Nobel laureate who in 1958 co-developed the fundamental theory on how superconductivity works. That has helped to produce decades of innovations and inventions. Mathiowitz, professor of molecular pharmacology, physiology and biotechnology, holds 25 patents assigned to Brown or her company, Perosphere, from her research into advancing the means of delivering and enhancing drug uptake for biomedical therapies. Both professors also hold international patents.