logo
Sign in

CLEARSIGN TECHNOLOGIES CORPORATION

Seattle, WA · Founded 2008 · Clean tech · Public

Catalytic burner technology that reduces NOx emissions in industrial combustion systems

Claim this profile

Follows are private to you and power your alerts

Updated · clearsign.com

Sector
Clean tech
Headquarters
Seattle, WA
Founded
2008
Latest Form D
$4.3M, Jul 2024
Total capital
$24.4M
Federal grants
$1.9M
2 awards · 2022–2023
Rank in peer group#4 of 53
Private capital raised
$22.5M
5 Form D · last Jul 2024
28 months since last filing
Federal contracts
None on recordNo federal contract awards found.
Granted patents
16
24 pending · first 2020
Rank in peer group#2 of 53

Capital timeline

2011201320152017201920212023FEDERAL ↑EQUITY ↓Cumulative $24.4M$250K$1.6M1st Form D$100K2nd Form D$11.7M4th Form D$5M
2011201520192023FEDERAL ↑EQUITY ↓Cumulative $24.4M$250K$1.6M2nd Form D$11.7M

Latest events

  • Private capital raisedForm D · SEC · 5th filing$4.3M
  • Private capital raisedForm D · SEC · 4th filing$5M
  • Federal grantEnergy · Phase II · A Flexible Fuel Ultra-low NOx Process Burner$1.6M
  • Federal grantEnergy · Phase I · A Flexible Fuel Ultra-low NOx Process Burner$250K
  • Private capital raisedForm D · SEC · 3rd filing$1.3M
  • Private capital raisedForm D · SEC · 2nd filing$11.7M
  • Private capital raisedForm D · SEC · 1st filing$100K

Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.

Standing among 53 peers

Line = median

Clean tech · Device

  • Federal grants#4 · top 8%
  • Granted patents#2 · top 4%
  • Linked publications#3 · top 6%

Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.

Founders and team

From SEC Form D filings
  • Brent James HindsExecutive OfficerNamed in SEC Form D filings
  • Bruce Alan PateDirectorNamed in SEC Form D filings
  • Catharine S. de LacyDirectorNamed in SEC Form D filings
  • Colin James DellerExecutive Officer, DirectorNamed in SEC Form D filings
  • David M. MaleyDirectorNamed in SEC Form D filings
  • Judith S. SchreckerDirectorNamed in SEC Form D filings
Show all 8 people
  • Robert T. Hoffman Sr.DirectorNamed in SEC Form D filings
  • Susanne James MelineDirectorNamed in SEC Form D filings

What it has protected

USPTO · 16 granted of 40
  • PendingBurner Assembly For Gaseous FuelsUSPTOApplication 19545711
  • GrantedBurner System With Discrete Transverse Flame StabilizersUSPTOUS 12,359,804
  • PendingPrefabricated Integrated Combustion Assemblies And Methods Of Installing The Same Into A Combustion SystemUSPTOApplication 19030793
Show all 40 patent records

Recent research by its founders

  • Electric field assisted reduction of NOx emission: A numerical study20230 cites
  • Ein integriertes Vorgehensmodell zur Planung und Umsetzung eines ISMS am Beispiel der Pharmaproduktion20180 cites
  • Prebreakdown Luminosity Increase In Flames20180 cites

Related companies, and why

Regulatory activity · Clean tech

Sector-level, not company-level

Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.

Sources

Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.

How to read this page

Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.

Data freshness

SEC Form D filings through . SBIR and STTR awards through .