Average Co-Inventor Count = 4.00
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 2,667 patents)
2. Kubata Ltd. (1 from 1 patent)
3 patents:
1. 4273007 - Transmission for agricultural tractor
2. 4119183 - Clutch
3. 4091685 - Speed change unit for tiller