Joseph Rubinfeld

SuperGen, Inc. researches and develops drugs, diagnostics and other therapeutic products. It discovers and develops novel cancer therapies and drugs. SuperGen buys rights to drugs in advanced stages of development and bring them to market. The company's major product is Nipent it is used for graft-versus-host disease, which afflicts bone marrow transplant recipients and various forms of lymphoma. SuperGen also makes a few generic cancer drugs like paclitaxel. The company was founded on March 6, 1991 by David M Fineman and Elliott L. Fineman and is headquartered in Dublin, CA.

Vivacitas Oncology, Inc. is a private clinical stage biopharmaceutical company founded in 2015 by Dr. Joseph Rubinfeld and Infusion 51a, LP. The company is based in Walnut Creek, CA. Vivacitas Oncology is focused on combating cancers that have proven to be resistant to current treatment modalities. The company aims to improve upon well-known chemotherapies with demonstrated effect, but which also possess challenges with potency, toxicity, stability, and other issues limiting their use. The CEO is Mark J. Suseck.

Imcure Therapeutics, Inc. provides biopharmaceutical products. The firm develops small molecule therapeutics to treat diseases. The company was founded by Joseph Rubinfeld in December 2003 and is headquartered in San Francisco, CA.