Average Co-Inventor Count = 2.25
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. Toyoda Gosei Co., Ltd. (2 from 3,081 patents)
2. Kubota Corporation (2 from 2,697 patents)
3 patents:
1. 5203226 - Steering wheel provided with luminous display device
2. D312435 - Steering wheel for agricultural machine
3. D301224 - Steering wheel for agricultural machine