Quarterly report pursuant to Section 13 or 15(d)

Intangible assets (Details)

v3.8.0.1
Intangible assets (Details) - USD ($)
3 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Finite-Lived Intangible Assets [Line Items]    
Patents $ 146,918 $ 135,291
Customer relationships 81,773 81,773
Less: Accumulated amortization (16,012) (12,097)
Subtotal 212,679  
Trademarks 1,560 1,560
Intangible assets, net $ 214,239 $ 206,527
Patents [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite lived intangible asset estimated useful life 15 years  
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Finite lived intangible asset estimated useful life 14 years