Average Co-Inventor Count = 1.14
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. Power Tool Holders, Inc. (4 from 112 patents)
4 patents:
1. 6572310 - Self-cleaning drill chuck
2. 6540237 - Chuck
3. 6260856 - Locking chuck
4. 6173972 - Locking chuck