Average Co-Inventor Count = 3.33
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. Other (4 from 832,812 patents)
2. Guyan Machinery Co. (1 from 2 patents)
5 patents:
1. 4991766 - Process of manufacturing a conical flight assembly
2. 4961722 - Conical screen for a vertical centrifugal separator
3. 4171607 - Two-row tobacco harvester
4. 4069648 - Tobacco harvester
5. 4037392 - Tobacco harvester