Thermasi LLC
Doing business as Cocoon Energy
At a glance
EmployeesNot reported
In business sinceNot reported
HeadquartersSaint Clair, MO
US patents2
SAM.gov UEIJK6LXDHE49Y6
CAGE code22MU7
Incorporated inMO
- HVAC
- thermal mass technology
- heating
Named on the company’s own website, read SEP 9, 2026
Patents
2 US patents granted 2020–2023, 1 of them in the five years to SEP 2025.
Electrical machinery, apparatus, energy 2
- Electric resistance radiant furnace having a short cycle air passUS 11,781,783 · granted OCT 10, 2023
- Electric resistance radiant furnace with mesh, screen, or honeycomb between panel emittersUS 10,767,902 · granted SEP 8, 2020
Granted to Thermasi LLC · PatentsView (USPTO), data through SEP 30, 2025 · CC BY 4.0
Their plant
| Facility | City | State | Employees | Status |
|---|---|---|---|---|
| Thermasi LLC | Saint Clair | MO | — | ACTIVE |
Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.


