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3. PATENTS
 12 Months Ended
Mar. 31, 2012
Intangible Assets Disclosure [Text Block]
3. PATENTS

Patents consist of the following:

   
March 31, 2012
   
March 31, 2011
 
             
Patents
 
$
157,442
   
$
157,442
 
Patents pending and trademarks
   
54,203
     
54,202
 
Accumulated amortization
   
(80,828
)
   
(71,663
)
   
$
130,817
   
$
139,981
 

Amortization of patents for the years ended March 31, 2012 and 2011 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.