Average Co-Inventor Count = 4.02
ph-index = 1
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 2,683 patents)
2. Dainippon Sumitomo Pharma Co., Ltd. (3 from 140 patents)
6 patents:
1. 8997469 - Engine with exhaust treatment device and attachment method for exhaust treatment device
2. 8389511 - Bicyclic heterocyclic derivative
3. 7825155 - Oxindole derivative as feeding control agent
4. 7644706 - Breather device for an engine
5. 7284529 - Engine
6. 7220773 - Pyrrole derivative