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Note 10 - Patents and Trademarks, Net
3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Intangible Assets Disclosure [Text Block]
10.
Patents and Trademarks, net
 
Net patents and trademarks totaled
$139
and
$158
as of
March 31, 2021
and
December 31, 2020,
respectively, and primarily consisted of purchased patent rights and internally developed patents.
 
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 agreement.
 
In addition to the purchased and licensed patents, the Company has internally developed patents. Internally developed patents include legal and registration costs incurred to obtain 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.
 
The Company amortizes capitalized patents and trademarks over an average of
10
to
17
year periods. Amortization expense for patents and trademarks was
$19
and
$21
for the
three
months ended
March 31, 2021
and
2020,
respectively.