Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Revenue From Contracts With Customers (Tables)

v3.20.1
Note 3 - Revenue From Contracts With Customers (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Disaggregation of Revenue [Table Text Block]
T
hree Months Ended March 31, 2020
 
Diagnostics
 
Royalty revenue:
       
Europe
  $
15,221
 
T
hree Months Ended March 31, 2019
 
Diagnostics
 
Royalty revenue:
       
Europe
  $
3,150
 
         
Other revenue:
       
Additional stability studies
  $
11,024
 
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]
   
Three Months Ended March 31,
 
   
20
20
   
201
9
 
Total deferred revenue, beginning of period
  $
700,000
    $
711,024
 
Revenue recognized from satisfaction of performance obligations
   
     
(11,024
)
Total deferred revenue, end of period
  $
700,000
    $
700,000