Cover
Cover | Sep. 08, 2021 |
Cover [Abstract] | |
Document Type | 8-K |
Amendment Flag | false |
Document Period End Date | Sep. 8, 2021 |
Current Fiscal Year End Date | --12-31 |
Entity File Number | 001-35521 |
Entity Registrant Name | CLEARSIGN TECHNOLOGIES CORPORATION |
Entity Central Index Key | 0001434524 |
Entity Tax Identification Number | 26-2056298 |
Entity Incorporation, State or Country Code | WA |
Entity Address, Address Line One | 12870 Interurban Avenue South |
Entity Address, City or Town | Seattle |
Entity Address, State or Province | WA |
Entity Address, Postal Zip Code | 98168 |
City Area Code | 206 |
Local Phone Number | 673-4848 |
Written Communications | false |
Soliciting Material | false |
Pre-commencement Tender Offer | false |
Pre-commencement Issuer Tender Offer | false |
Title of 12(b) Security | Common Stock |
Trading Symbol | CLIR |
Security Exchange Name | NASDAQ |
Entity Emerging Growth Company | false |