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Patents (Tables)
9 Months Ended
Mar. 31, 2018
Patents [Abstract]  
Schedule of patents
  As of
March 31,
  As of 
June 30,
 
  2018  2017 
       
Patents $380,000  $380,000 
Less accumulated amortization  (128,000)  (109,000)
         
Patents, net $252,000  $271,000
Schedule of amortization expense
  Three Months Ended
March 31,
  Nine Months Ended
March 31,
 
  2018  2017  2018  2017 
             
Amortization expense $6,000  $6,000  $19,000  $19,000