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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Current Assets:    
Cash and cash equivalents $ 7,607 $ 8,824
Accounts receivable 33  
Contract assets 39 92
Prepaid expenses 345 466
Total current assets 8,024 9,382
Fixed assets, net 530 427
Patents and other intangible assets, net 799 1,302
Other assets 10 10
Total Assets 9,363 11,121
Current Liabilities:    
Accounts payable and accrued liabilities 224 435
Current portion of lease liabilities 205 169
Accrued compensation and taxes 218 382
Contract liabilities 84 94
Total current liabilities 731 1,080
Long Term Liabilities:    
Long term lease liabilities 350 249
Payroll protection program loan   251
Total liabilities 1,081 1,580
Commitments and contingencies (Note 7)
Stockholders' Equity:    
Preferred stock, $0.0001 par value, zero shares issued and outstanding
Common stock, $0.0001 par value, 31,581,666 and 30,077,436 shares issued and outstanding at December 31, 2021 and December 31, 2020, respectively 3 3
Additional paid-in capital 91,035 84,411
Accumulated other comprehensive income 9  
Accumulated deficit (82,765) (74,874)
Total ClearSign Technologies Corporation stockholders' equity 8,282 9,540
Noncontrolling Interest   1
Total stockholders' equity 8,282 9,541
Total Liabilities and Stockholders' Equity $ 9,363 $ 11,121