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Patents

12 Months Ended

Jul. 31, 2013

Note 4 - Patents:

The costs and accumulated amortization of patents are summarized as follows:

	July 31,
	2013		2012

Patents	$	5,657,455	$	5,587,790

Less: Accumulated Amortization		3,338,039		2,953,332

Patents, Net	$	2,319,416	$	2,634,458

Weighted Average Life		8.6 years		9.4 years

Amortization expense amounted to $391,777, $441,087 and $430,650 for the years ended July 31, 2013, 2012 and 2011, respectively. Amortization expense is expected to be approximately $274,000 per year for the years ended July 31, 2014 through 2018. During the year ended July 31, 2013, the Company did not write off any patents. During the year ended July 31, 2012, the Company wrote off patents with a net book value of $440,780 as the patents had been abandoned or were no longer being used. The charge was included in research and development expenses on our consolidated statements of operations. During the year ended July 31, 2011, the Company did not write off any patents.

- Definition

Disclosure of accounting policy for revenue recognition for licensing fees, which is consideration paid to the entity (licensor) by another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, or trademark.

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