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Note 3 - Intellectual Property
9 Months Ended
Sep. 30, 2019
Notes to Financial Statements  
Intangible Assets Disclosure [Text Block]
Note
3—Intellectual
Property
 
We have exclusive license agreements on
thirty-two
(
32
) issued and
one
(
1
) allowed patent for technologies developed by researchers at The University of Texas MD Anderson Cancer Center, and The University of Texas Southwestern Medical Center.  These patents comprise various therapeutic, diagnostic, technical and processing claims. These license rights will be amortized on a straight-line basis over the estimated period of useful lives of the underlying patents or the license agreements.