Average Co-Inventor Count = 3.78
ph-index = 6
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 (5 from 2,667 patents)
2. Kabushiki Kaisha Kubota (1 from 1 patent)
3. Kubuto, Ltd. (1 from 1 patent)
7 patents:
1. 5207306 - Device for operating clutch of vehicle
2. 4903789 - Power steering apparatus
3. 4798260 - Steering apparatus for a front wheel drive tractor
4. 4772065 - Tractor cabin and manufacturing method therefor
5. 4721031 - Tractor cabin
6. 4650242 - Tractor cabin
7. 4628768 - Tractor transmission