Average Co-Inventor Count = 2.46
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. Kennametal Inc. (1 from 1,543 patents)
2. Hertel Ag Werkzeuge+hartstoffe (1 from 9 patents)
3. Kennametal Hertel Ag (1 from 5 patents)
4. Kennametal Hertal Ag (1 from 1 patent)
5. Kennametal Hertel Ag Werkzeuge and Hartstoffe (1 from 1 patent)
5 patents:
1. 6142485 - Chuck for rotary tools
2. 5915895 - Drilling and chamfering tool
3. 5848858 - Milling cutter
4. 5810527 - Rotary tool with balancing rings
5. 5186584 - Twist drill