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Patents (Tables)
3 Months Ended
Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of patents

   As of
September 30,
   As of
June 30,
 
   2018   2018 
         
Patents  $380,000   $380,000 
Less accumulated amortization   (140,000)   (134,000)
           
Patents, net  $240,000   $246,000 

Schedule of amortization expense

   Three Months Ended
September 30,
 
   2018   2017 
          
Amortization expense  $6,000   $6,000