v3.19.1
Amortizable Intangible Assets
 3 Months Ended
Apr. 28, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Amortizable Intangible Assets
Amortizable Intangible Assets
The components of our amortizable intangible assets are as follows:
 
April 28, 2019
 
January 27, 2019
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying
Amount
 
Gross
Carrying
Amount
 
Accumulated
Amortization
 
Net Carrying
Amount
 
(In millions)
 
(In millions)
Acquisition-related intangible assets
$
195

 
$
(188
)
 
$
7

 
$
195

 
$
(188
)
 
$
7

Patents and licensed technology
507

 
(460
)
 
47

 
491

 
(453
)
 
38

Total intangible assets
$
702

 
$
(648
)
 
$
54

 
$
686

 
$
(641
)
 
$
45


The increase in gross carrying amount of intangible assets is due to purchases of licensed technology during the first quarter of fiscal year 2020. Amortization expense associated with intangible assets was $7 million and $11 million for the first quarter of fiscal years 2020 and 2019, respectively. Future amortization expense related to the net carrying amount of intangible assets as of April 28, 2019 is estimated to be $18 million for the remainder of fiscal year 2020, $17 million in fiscal year 2021, $9 million in fiscal year 2022, $7 million in fiscal year 2023, and $3 million in fiscal year 2024.