ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,289, issued on Feb. 3, was assigned to BIOSUCCESS BIOTECH COMPANY Ltd. (San Jose, Calif.).

"Phorbol ester compositions and methods of use for treating or reducing the duration of cytopenia" was invented by Zheng Tao Han (Eugene, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and compositions containing a phorbol ester or a derivative of a phorbol ester in combination with G-CSF or in combination with EPO, are provided for the treatment of cytopenia in mammalian subjects. The compositions and methods also reduce the duration of cytopenia such as neutropenia, thrombocytopenia, and/or anemia."

The patent was filed on April 24, 2017, under ...