| Schedule of other intangible assets |
| |
|
|
|
January 31, 2021 |
|
| |
|
Estimated Life |
|
Gross Carrying Amount |
|
|
Accumulated Amortization |
|
|
Net carrying amount |
|
| Patents |
|
10 Years |
|
$ |
2,387,328 |
|
|
$ |
(1,128,997 |
) |
|
$ |
1,258,331 |
|
| Trademarks |
|
3 Years |
|
|
1,239,334 |
|
|
|
(980,633 |
) |
|
|
258,701 |
|
| Other intangibles |
|
5 Years |
|
|
839,737 |
|
|
|
(839,737 |
) |
|
|
- |
|
| Total |
|
|
|
$ |
4,466,399 |
|
|
$ |
(2,949,367 |
) |
|
$ |
1,517,032 |
|
| |
|
|
|
February 2, 2020 |
|
| |
|
Estimated Life |
|
Gross Carrying Amount |
|
|
Accumulated Amortization |
|
|
Net carrying amount |
|
| Patents |
|
10 Years |
|
$ |
1,965,794 |
|
|
$ |
(846,898 |
) |
|
$ |
1,118,896 |
|
| Trademarks |
|
3 Years |
|
|
982,800 |
|
|
|
(749,535 |
) |
|
|
233,265 |
|
| Other intangibles |
|
5 Years |
|
|
839,737 |
|
|
|
(839,737 |
) |
|
|
- |
|
| Total |
|
|
|
$ |
3,788,331 |
|
|
$ |
(2,436,170 |
) |
|
$ |
1,352,161 |
|
|