Intangible and Other Assets

Patents amounted to $59 thousand and $62 thousand, net of accumulated amortization of $906 thousand and $871 thousand, at September 30, 2014 and December 31, 2013, respectively. Licenses amounted to $51 thousand and $110 thousand, net of accumulated amortization of $97 thousand and $38 thousand, at September 30, 2014 and December 31, 2013, respectively. Patent cost is primarily composed of costs associated with securing and registering patents that the Company has been awarded or that have been submitted to the U.S. Patent and Trademark Office, and the Company believes will be approved. License cost is composed of the cost to acquire rights to the underlying technology or know-how. These costs are capitalized and amortized over their useful lives or terms, using the straight-line method. There are no expected residual values related to these patents.

Amortization expense, relating to patents and licenses, was approximately $31 thousand and $14 thousand for the three months ended September 30, 2014 and 2013, respectively. Amortization expense, relating to patents and licenses, was approximately $94 thousand and $41 thousand for the nine months ended September 30, 2014 and 2013, respectively.

The table below includes future amortization expense for patents and licenses owned by the Company as well as estimated amortization expense related to patents that remain pending at September 30, 2014 of $111 thousand. This estimated expense for patents pending assumes that the patents are issued immediately, and therefore are being amortized over five years on a straight-line basis. Estimated amortization expense for the periods ending December 31, is as follows:



(in thousands)	Amortization Expense
2014 remaining 3 months	$	18
2015	51
2016	37
2017	33
2018	34
2019	25
2020 and future	23
	$	221

Also included in other assets are refundable deposits made by the Company of approximately $150 thousand and $150 thousand at September 30, 2014 and December 31, 2013, respectively.