Average Co-Inventor Count = 6.46
ph-index = 2
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. Kubota Corporation (2 from 2,710 patents)
2 patents:
1. 5993502 - Sintered metal filters
2. 5925156 - Sintered metal filters