Average Co-Inventor Count = 4.00
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. Jacobs Chuck Manufacturing Company (2 from 44 patents)
2. Power Tool Holders, Inc. (1 from 112 patents)
3 patents:
1. 7160065 - Chuck with quick change
2. 7040630 - Chuck with quick change
3. 6688610 - Chuck with quick change