The principle of Z engine has patent pending in all industrial countries. The international patent has been granted in the following countries:

• • Australia (Letters patent No.: 766571, 29.12.2004)
  • Russian Federation (Patent No.: 2263802)
  • South Korea (Patent No: 10-0567989)
  • India (Patent No.: 197654)
  • United States of America (Patent No.: US 7,121,232 B1)
  • Germany (Patent No: 1230472)
  • France (Patent No: 1230472)
  • Great Britain (Patent No: 1230472)
  • Italy (Patent No: 1230472)
  • Brazil (Patent No: PI0013260-8)
  • Canada (Patent No: 2,389,004)

The Z combustion has also international patent pending.