Average Co-Inventor Count = 5.36
ph-index = 3
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 (3 from 2,667 patents)
3 patents:
1. 5993502 - Sintered metal filters
2. 5925156 - Sintered metal filters
3. 5625861 - Porous metal body and process for producing same