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3. PATENTS | 12 Months Ended
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Mar. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
PATENTS | Patents consist of the following:
|  | March 31, 2013 |  |  | March 31, 2012 |
Patents |  | $ | 157,442 |  |  | $ | 157,442 |
Patents pending and trademarks |  |  | 54,203 |  |  |  | 54,203 |
Accumulated amortization |  |  | (89,992 | ) |  |  | (80,828 | )
|  | $ | 121,653 |  |  | $ | 130,817 |
Amortization of patents for the years ended March 31, 2013 and 2012 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 7.5 years.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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