Note 8 - Patents and Trademarks, Net

12 Months Ended

Dec. 31, 2017

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

8

.

Patents and trademarks, net

Patents

and trademarks consist of the following:

	December 31,
	2017			2016
Purchased and licensed patent rights	$	566		$	566
Internally developed patents		1,686			1,686
Trademarks		148			148
Total		2,400			2,400
Accumulated amortization	$	(1,992	)	$	(1,906	)
Total intangible assets, net	$	408		$	494

Amortization expense was

$86,

$98,

and

$99

for the years ended

December 31, 2017,

2016,

and

2015,

respectively, and is included in research and development expense in the consolidated statements of operations and comprehensive loss. The estimated aggregate amortization expense for each of the

five

succeeding years is as follows:

December 31,	Aggregate Amortization Expense
2018	$	86
2019		84
2020		81
2021		56
2022		29
Thereafter		72
Total	$	408

Accumulated amortization for the year

s ended

December 31, 2017

and

2016

is as follows:

	December 31,
	2017			2016
Purchased and licensed patent rights	$	(541	)	$	(534	)
Internally developed patents		(1,326	)		(1,253	)
Trademarks		(125	)		(119	)
Total	$	(1,992	)	$	(1,906	)

The weighted average amortization periods for the years ended

December 31, 2017

and

2016

are as follows:

	December 31,
	2017		2016
Purchased and licensed patent rights		17		17
Internally developed patents		17		17
Trademarks		10		10

Purchased patent rights represent the exclusive right to commercialize the bulk amorphous alloy and other amorphous alloy

technology acquired from California Institute of Technology (“Caltech”), through a license agreement with Caltech and other institutions. All fees and other amounts payable by the Company for these rights and licenses have been paid or accrued in full, and

no

further royalties, license fees or other amounts will be payable in the future under the license agreements.

In addition to the purchased and licensed patents, the Company has

capitalized legal and registration costs incurred to obtain and maintain the respective patents. The Company currently holds various patents and numerous pending patent applications in the United States, as well as numerous foreign counterparts to these patents outside of the United States.