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Patents (Tables)
6 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of patents
    As of December 31,     As of June 30,  
    2018     2018  
             
             
Patents   $ 380,000     $ 380,000  
Less accumulated amortization     (147,000 )     (134,000 )
                 
   Patents, net   $ 233,000     $ 246,000  
Schedule of amortization expense
    Three Months Ended December 31,     Six Months Ended December 31,  
    2018     2017     2018     2017  
Amortization expense   $ 7,000     $ 6,000     $ 13,000     $ 12,000