Average Co-Inventor Count = 3.86
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. Minnesota Mining and Manufacturing Company (3 from 7,865 patents)
3 patents:
1. 5774265 - Durable retroreflective elements
2. 4957886 - Aluminum oxide/aluminum oxynitride/group IVB metal nitride abrasive
3. 4855264 - Aluminum oxide/aluminum oxynitride/group IVB metal nitride abrasive