| Net loss | |
| Depreciation of property and equipment | 576K |
| Amortization of patent and trademark rights, and royalty interest | |
| Redeemable warrants valuation adjustment | |
| Equity based compensation | |
| Gain on disposal of equipment | |
| Inventories | 0 |
| Prepaid expenses and other current assets | |
| Accounts payable | 178K |
| Accrued expenses | 1.82M |
| Net cash used in operating activities | |
| Purchase of property and equipment | -160K |
| Additions to patent and trademark rights | -207K |
| Deposits on capital leases | |
| Maturities of short-term and long-term investments | 1.92M |
| Purchase of short-term and long-term investments | |
| Net cash provided by (used in) investing activities | |
| Payments on capital lease | |
| Proceeds from sale of stock, net of issuance costs | 163K |
| Net cash provided by (used in) financing activities | |
| Net decrease in cash and cash equivalents | -577K |
| Cash and cash equivalents at beginning of period | 2.12M |
| Cash and cash equivalents at end of period | 1.54M |
| Issuance of common stock for accounts payable and accrued expenses | |
| Equipment acquired by capital lease | |
| Unrealized gain (loss) on investments | |
| Redeemable warrants valuation adjustment | |
| Cash paid for interest expense | |