Patents and Trademarks, Net
|12 Months Ended|
Dec. 31, 2017
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Patents and Trademarks, Net||
Note 4 Patents and Trademarks, Net
Total amortization expense for patents and trademarks for the years ended December 31, 2017, 2016 and 2015 was $77,415, $106,734 and $86,478, respectively. The estimated aggregate annual amortization expense for each of the next five fiscal years is approximately $88,000. We recorded an impairment charge of $20,506 representing cost of $44,371, less accumulated amortization of $23,865 for the year ended December 31, 2016. We recorded an impairment charge of $13,222 representing cost of $21,954, less accumulated amortization of $8,732 for the year ended December 31, 2015 regarding our abandoned patents and trademarks. We recorded no patent impairment charges for the year ended December 31, 2017.
The entire disclosure for all or part of the information related to intangible assets.
Reference 1: http://www.xbrl.org/2003/role/presentationRef