Patents and Licenses

6 Months Ended

Jun. 30, 2020

Patents and Licenses

5- Patents and Licenses

(5) Patents and Licenses

Purchased patents and license fees paid for the use of other entities’ patents are amortized over the useful life of the patent or license. The following tables provide information regarding patents and licenses (dollars in thousands):

June 30, 2020						December 31, 2019
Weighted Average Original Life (years)								Gross Carrying Amount		Accumulated Amortization
	15.67	$	13,840	$	12,360		15.67	$	13,840	$	12,301

Aggregate amortization expense for patents and licenses was $30,000 in each of the three months ended June 30, 2020 and 2019 and $60,000 in each of the six months ended June 30, 2020 and 2019.

Estimated future amortization expense for each of the years set forth below ending December 31 is as follows (in thousands):

2021	$	119
2022	$	117
2023	$	113
2024	$	113
2025	$	112