11 Air filtering installations; Air filtering units; Air filters for air conditioners in vehicle passenger compartments; Air filters for air conditioning units; Air filters for domestic use; Air purifying apparatus; Air purifying apparatus and machines; Filters and filtering devices for air and gas conditioning; Filters for air conditioning; HEPA filters for household use
The mark consists of the stylized letters "Kaloen" and the letter "O" with two dots above it. Color is not claimed as a feature of the mark. The wording Kaloen has no meaning in a foreign language.