Annual report pursuant to Section 13 and 15(d)

Deferred Tax asset and liability (Details)

v3.10.0.1
Deferred Tax asset and liability (Details) - USD ($)
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Deferred tax assets:      
Net operating loss carry-forwards $ 7,335,196 $ 9,303,936 $ 7,537,193
R&D credit 489,351 489,351 563,641
Stock-based compensation 709,218 902,468 491,371
Derivative liability 59,056 83,674 84,174
Intangible asset amortization 89,931 66,536 6,634
Total deferred tax assets 8,682,752 10,845,965 8,683,013
Valuation allowance (8,600,408) (10,730,878) (8,581,777)
Deferred tax asset, net of valuation allowance 82,344 115,087 101,236
Deferred tax liabilities      
Fixed asset depreciation (23,288) (31,413) (17,062)
Intangible asset amortization
Convertible debt (59,056) (83,674) (84,174)
Total deferred tax liabilities (82,344) (115,087) (101,236)
Net deferred tax assets (liability)