Average Co-Inventor Count = 2.50
ph-index = 4
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. Deere + Company (3 from 8,451 patents)
2. International Harvester Company (1 from 481 patents)
4 patents:
1. 7690973 - Combine clean grain elevator system
2. 7213389 - Infinitely variable transmission for a combine header unit
3. 4483128 - Variable drive for a harvester functional element
4. 4160456 - 2-Speed rotor gear case