Check these two registry keys for the software:
get-itemproperty 'HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall*'
get-itemproperty 'HKLM:\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall*'
You can check the "DisplayName" property, perhaps for a value like "Maxon". If you find the item the "UninstallString" property will contain the information necessary to remove the software.