Patented Clean-Combustion Platform

The technology

A two-stage combustion platform engineered around natural aerodynamics — re-burning its own exhaust to cut emissions while raising efficiency. Independently tested, patented in 60+ countries.

The Technology

The patented technology that re-burns its own smoke

Two-stage combustion with controlled airflow burns the exhaust gases and particulates a second time at high temperature, cutting smoke by up to 99%.

  1. 01

    Primary air

    A pressure differential sets up a swirling draught so the fuel burns evenly.

  2. 02

    Secondary air

    Combustion gases are mixed with secondary air, ready to burn a second time.

  3. 03

    Re-combustion

    In the patented second chamber the pollutants break down at high temperature.

  4. 04

    Clean output

    Smoke and toxic gas are neutralised, and the same fuel yields more heat.

Cutaway of the Nuudelchin stove showing airflow and the secondary combustion chamber
  • Clean flue gas leaves the chimney
  • Re-combustion chamber
  • Secondary air injection nozzles
  • Insulating heat jacket
  • Primary air duct
  • Ash box

Emissions independently measured below the MNS 5216:2016 limits by NAOBTG and the Academy of Sciences. Heat transfer 85–90%; fuel savings 30–40% with correct use.

Independent Validation

Laboratory-verified performance

Emissions measured against MNS 5216:2016

PollutantOur stovePermissible maximum
COmg/nm³
1,815
≤ 9,800
SO₂mg/nm³
186
≤ 1,200
NOₓmg/nm³
90
≤ 700
TSPmg/nm³
98
≤ 130
MeasuredMNS 5216:2016 limit

Source: accredited NAOBTG laboratory (sampled 2025.08.07, reported 2025.08.15). Laboratory accredited under MNAS · MNS ISO/IEC 17025 · TL 176.

Laboratory test reports

NAOBTG emissions test sheet — Aug 2025NAOBTG emissions test sheet — Dec 2024Innovation product determination — 2019
Download the full report, PDF

Intellectual Property

Protected in 60+ countries

The dual-combustion technology is filed through WIPO under the Patent Cooperation Treaty (PCT) and granted across Asia, Europe and North America.

WIPO · PCT
🇲🇳Granted

Mongolia

№ 4244

Invention patent · 2014

🇷🇺Granted

Russia

№ 2737255

Invention patent · 2020

🇨🇳Granted

China

ZL 2017 2 1366314.9

Utility model patent · 2018

🇰🇷Granted

South Korea

№ 10-2815604

Invention patent · 2025

🇪🇺Granted

Eurasian (EAPO)

№ 050815

Covers 8 member states · 2025

🇲🇳 Mongolia🇷🇺 Russia🇰🇷 South Korea🇨🇳 China🇨🇦 Canada🇺🇸 USA🇪🇺 EU🇰🇿 Kazakhstan🇧🇾 Belarus🇦🇲 Armenia🇦🇿 Azerbaijan🇰🇬 Kyrgyzstan🇹🇯 Tajikistan🇹🇲 Turkmenistan🇵🇭 Philippines🇹🇭 Thailand🇮🇳 India🇯🇵 Japan

…and 60+ jurisdictions worldwide

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