Quarterly report pursuant to Section 13 or 15(d)

Amortizable intangible assets -Amounts related to intangible assets (Details)

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Amortizable intangible assets -Amounts related to intangible assets (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]          
Amortization of Intangible Assets $ 20,853 $ 14,487 $ 40,825 $ 24,247  
Intangible Assets, Current 1,026,199   1,026,199    
Finite-Lived Intangible Assets, Gross 1,202,012   1,202,012   1,088,315
Finite-Lived Intangible Assets, Accumulated Amortization (175,813)   (175,813)   (134,988)
Intangible assets, net 1,026,199   1,026,199   953,327
Patents [Member]
          
Finite-Lived Intangible Assets [Line Items]          
Intangible Assets, Current 440,641   440,641    
Finite-Lived Intangible Assets, Gross 492,669   492,669   441,610
Finite-Lived Intangible Assets, Accumulated Amortization (52,028)   (52,028)   (39,583)
Intangible assets, net         402,027
Product Certification [Member]
          
Finite-Lived Intangible Assets [Line Items]          
Intangible Assets, Current 365,558   365,558    
Finite-Lived Intangible Assets, Gross 469,343   469,343   406,705
Finite-Lived Intangible Assets, Accumulated Amortization (103,785)   (103,785)   (83,405)
Intangible assets, net         323,300
Developed Technology Rights [Member]
          
Finite-Lived Intangible Assets [Line Items]          
Intangible Assets, Current 220,000   220,000    
Finite-Lived Intangible Assets, Gross 240,000   240,000   240,000
Finite-Lived Intangible Assets, Accumulated Amortization (20,000)   (20,000)   (12,000)
Intangible assets, net         $ 228,000