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3. PATENTS
12 Months Ended
Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
PATENTS

3. PATENTS

 

Patents consist of the following:

 

    March 31, 2014     March 31, 2013  
Patents   $ 157,442     $ 157,442  
Patents pending and trademarks     54,203       54,203  
Accumulated amortization     (99,156 )     (89,992 )
    $ 112,489     $ 121,653  

 

Amortization expense for patents for the years ended March 31, 2014 and 2013 approximated $9,000. Future amortization expense on patents is estimated to be approximately $9,000 per year based on the estimated life of the patents. The weighted average remaining life of our patents is approximately 6.5 years.