Subsequent Events	3 Months Ended
Mar. 31, 2012
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Note 7 – Subsequent Events In April and May 2012, the Company completed an initial public offering (IPO) whereby 3,450,000 shares of common stock were issued at $4.00 per share, which included the exercise of the overallotment allowance by the underwriter, MDB Capital Group LLC. Gross proceeds from the IPO totaled $13.8 million and net proceeds approximated $10.9 million. Expenses of the offering approximated $2.9 million, including underwriter fees of $1.2 million paid to MDB Capital Group LLC along with 345,000 warrants to purchase ClearSign’s common stock at $5.00 per share exercisable from April 2013 to April 2017, qualified independent underwriter fees of $110,000, underwriter legal fees of $125,000, underwriter expenses of $35,000, and issuer legal fees of $850,000, which includes 110,000 shares of common stock issued in April 2012 to the Company’s law firm at $4.00 per share.

Subsequent Events

3 Months Ended

Mar. 31, 2012

Note 7 – Subsequent Events

In April and May 2012, the Company completed an initial public offering (IPO) whereby 3,450,000 shares of common stock were issued at $4.00 per share, which included the exercise of the overallotment allowance by the underwriter, MDB Capital Group LLC. Gross proceeds from the IPO totaled $13.8 million and net proceeds approximated $10.9 million. Expenses of the offering approximated $2.9 million, including underwriter fees of $1.2 million paid to MDB Capital Group LLC along with 345,000 warrants to purchase ClearSign’s common stock at $5.00 per share exercisable from April 2013 to April 2017, qualified independent underwriter fees of $110,000, underwriter legal fees of $125,000, underwriter expenses of $35,000, and issuer legal fees of $850,000, which includes 110,000 shares of common stock issued in April 2012 to the Company’s law firm at $4.00 per share.