Donaldson Company, Inc
Born out of the creation of a simple air filter for a farm tractor 100 years ago, Donaldson today is one of the world’s largest filtration manufacturers, providing innovative filtration systems for a wide variety of products ranging from heavy-duty trucks to computer hard drives and automotive sensors. Our emphasis on invention and innovation has earned us a reputation for quality and technical excellence, with over 1,800 U.S. and international patents.