Quarterly report pursuant to Section 13 or 15(d)

Intangible assets other than goodwill -Amounts related to intangible assets (Details)

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Intangible assets other than goodwill -Amounts related to intangible assets (Details) - USD ($)
Sep. 30, 2016
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]    
Intangible assets $ 1,434,530 $ 1,363,306
Less - accumulated amortization (392,206) (318,695)
Intangible assets, net 1,042,324 1,044,611
Product Certifications    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 520,117 514,616
Less - accumulated amortization (221,184) (182,931)
Intangible assets, net 298,933 331,685
Patents    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 659,473 603,915
Less - accumulated amortization (115,022) (91,764)
Intangible assets, net 544,451 512,151
Developed Technology    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 240,000 240,000
Less - accumulated amortization (56,000) (44,000)
Intangible assets, net 184,000 196,000
Trademarks    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets 14,940 4,775
Intangible assets, net $ 14,940 $ 4,775