Annual report pursuant to Section 13 and 15(d)

Intangible Assets

Intangible Assets	12 Months Ended
Mar. 31, 2023
Intangible Assets
Intangible Assets	5. 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, 2023 and March 31, 2022. 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 $23,100 and $22,600 were earned by Solar for Fiscal 2023 and 2022, respectively. Earned royalties of approximately $99,500 and $76,400 were unpaid as of March 31, 2023 and 2022, respectively, and are included in accrued expenses in the accompanying consolidated balance sheets. Amortization expense for the intangible assets was zero and $0.1 million for Fiscal 2023 and 2022, respectively.

Intangible Assets

12 Months Ended

Mar. 31, 2023

5. 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, 2023 and March 31, 2022. 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 $23,100 and $22,600 were earned by Solar for Fiscal 2023 and 2022, respectively. Earned royalties of approximately $99,500 and $76,400 were unpaid as of March 31, 2023 and 2022, respectively, and are included in accrued expenses in the accompanying consolidated balance sheets.

Amortization expense for the intangible assets was zero and $0.1 million for Fiscal 2023 and 2022, respectively.