Average Co-Inventor Count = 2.77
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. 4574910 - Transmission for agricultural tractors
2. 4301886 - Front wheel drive
3. 4216680 - Travel speed change apparatus for a farm vehicle