Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Patents (Tables)

v3.8.0.1
Note 9 - Patents (Tables)
3 Months Ended
Mar. 31, 2018
Notes Tables  
Schedule of Finite-Lived Intangible Assets [Table Text Block]
 
2018
 
2017
 
 
Cost
 
Accumulated Amortization
 
Net
 
Cost
 
Accumulated Amortization
   
Net
 
Patents-foundation intellectual property
$
1,377,863
  $
(805,216
) $
572,647
  $
1,377,863
  $
(787,821
)   $
590,042
 
Epidural-Apad acquired patents
 
2,639,647
   
(659,912
)  
1,979,735
   
2,639,647
   
(439,941
)    
2,199,706
 
Total
$
4,017,510
  $
(1,465,128
) $
2,552,382
  $
4,017,510
  $
(1,227,762
)   $
2,789,748