Average Co-Inventor Count = 1.00
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. Phillips Screw Company (3 from 42 patents)
3 patents:
1. 6367358 - Driver for threaded fasteners with spiral drive
2. 6234914 - Punch for forming threaded fasteners with spiral drive
3. 5957645 - Spiral drive system for threaded fasteners