<SEC-DOCUMENT>0001144204-18-021036-index.html : 20180418
<SEC-HEADER>0001144204-18-021036.hdr.sgml : 20180418
<ACCEPTANCE-DATETIME>20180418060100
ACCESSION NUMBER:		0001144204-18-021036
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20180503
FILED AS OF DATE:		20180418
DATE AS OF CHANGE:		20180418
EFFECTIVENESS DATE:		20180418

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CLEARSIGN COMBUSTION CORP
		CENTRAL INDEX KEY:			0001434524
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			WA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35521
		FILM NUMBER:		18760154

	BUSINESS ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168
		BUSINESS PHONE:		(206) 673-4848

	MAIL ADDRESS:	
		STREET 1:		12870 INTERURBAN AVENUE SOUTH
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98168
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEF 14A
<SEQUENCE>1
<FILENAME>tv491083-def14a.htm
<DESCRIPTION>DEFINITIVE PROXY STATEMENT
<TEXT>
Document 1 - file: tv491083-def14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>lg_clearsign.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: lg_clearsign.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>tv491083_pc1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: tv491083_pc1.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>tv491083_pc2.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: tv491083_pc2.jpg

</DOCUMENT>
</SEC-DOCUMENT>