Note 4—Balance Sheet Details

Property and Equipment

Property and equipment, net, is comprised of the following:

Schedule of Property and Equipment, Net

Depreciation and amortization expense recorded for the three and nine months ended April 30, 2022 was approximately $47,000 and $143,000, respectively.

Depreciation and amortization expense recorded for the three and nine months ended April 30, 2021 was approximately $47,000 and $143,000, respectively.

Intangible Assets

Intangible assets, net, is comprised of the following:

Schedule of Intangible Assets

In November 2020, the Company licensed generator technology for use in its clinical trials and other research and development efforts. Unless earlier terminated, the term of the license agreement will remain in effect for 85 months. The Company has determined that the license has alternative future uses in research and development projects. The value of the acquired license is recorded as an intangible asset with amortization over the estimated useful life of 85 months.

Intangible asset amortization expense recorded for the three and nine months ended April 30, 2022 was approximately $17,000 and $52,000, respectively.

Intangible asset amortization expense recorded for the three and nine months ended April 30, 2021 was approximately $17,000 and $29,000, respectively.

At April 30, 2022, the estimated amortization expense by fiscal year based on the current carrying value of intangible assets is as follows:

Schedule of Amortization Expense of Intangible Assets

Accounts Payable and Accrued Liabilities

Accounts payable and accrued liabilities are comprised of the following:

Schedule of Accounts Payable and Accrued Liabilities

Accrued Compensation

Accrued compensation is comprised of the following:

Schedule of Accrued Compensation