Annual report pursuant to Section 13 and 15(d)

Intangible Assets

Intangible Assets	12 Months Ended
Mar. 31, 2022
Intangible Assets
Intangible Assets	6. Intangible Assets Intangible assets, net of amortization include intellectual property such as manufacturing licenses providing the Company with the ability to manufacture recuperator cores previously purchased from Solar Turbines Incorporated (“Solar”) and were fully amortized as of March 31, 2022 and March 31, 2021. The Company is required to pay a per-unit royalty fee over a seventeen-year period for cores manufactured and sold by the Company using the technology. Royalties of approximately $22,600 and $27,400 were earned by Solar for Fiscal 2022 and 2021, respectively. Earned royalties of approximately $76,400 and $53,800 were unpaid as of March 31, 2022 and 2021, respectively, and are included in accrued expenses in the accompanying consolidated balance sheets. Amortization expense for the intangible assets was $0.1 million for Fiscal 2022 and 2021.

Intangible Assets

12 Months Ended

Mar. 31, 2022

6. Intangible Assets

Intangible assets, net of amortization include intellectual property such as manufacturing licenses providing the Company with the ability to manufacture recuperator cores previously purchased from Solar Turbines Incorporated (“Solar”) and were fully amortized as of March 31, 2022 and March 31, 2021. The Company is required to pay a per-unit royalty fee over a seventeen-year period for cores manufactured and sold by the Company using the technology. Royalties of approximately $22,600 and $27,400 were earned by Solar for Fiscal 2022 and 2021, respectively. Earned royalties of approximately $76,400 and $53,800 were unpaid as of March 31, 2022 and 2021, respectively, and are included in accrued expenses in the accompanying consolidated balance sheets.

Amortization expense for the intangible assets was $0.1 million for Fiscal 2022 and 2021.