Canada.
Patent 2,226,022. Odor-free composting method and installation/
Méthode et installation de compostage sans odeur.
USA.
Patent 6,237,303. Odor-free composting method and installation.
Europe.
Patent 98 964 346.5. Odor-free composting method and installation/Geruchsfreie
kompostierungsverfahren und anlage/ Méthode et installation
de compostage sans odeur.
Australia.
Patent 748727. Odor-free composting method and installation.