Average Co-Inventor Count = 5.00
ph-index = 4
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Donaldson Comapny, Inc. (4 from 1,404 patents)
4 patents:
1. 6521009 - Reverse flow air filter arrangement and method
2. 6413289 - Reverse flow air filter arrangement
3. 6322602 - Reverse flow air filter arrangement
4. 6258145 - Reverse flow air filter arrangement