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Note 7 - Intangible Assets (Tables) | 12 Months Ended
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Sep. 30, 2013
Disclosure Text Block [Abstract] |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | September 30, |
|  | 2013 |  |  | 2012 |
Cost |  | $ | 93,938 |  |  | $ | 358,925 |
Accumulated amortization |  |  | (42,288 | ) |  |  | (200,468 | )
|  | $ | 51,650 |  |  | $ | 158,457 |
|  | Year ended September 30, |
|  | 2013 |  |  | 2012 |
Amortization expense |  | $ | 23,317 |  |  | $ | 29,522 |
Loss on sale or impairment of patents |  |  | 81,307 |  |  |  | 41,621 |
Net sale or impairment of patents |  | $ | 104,624 |  |  | $ | 71,143 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Estimated Amortization Expense Years Ended September 30, |  |  |  |
2014 |  | $ | 6,269 |
2015 |  |  | 6,269 |
2016 |  |  | 6,269 |
2017 |  |  | 6,269 |
2018 |  |  | 6,269 |
Thereafter |  |  | 20,305 |
|  | $ | 51,650 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived 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 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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