Average Co-Inventor Count = 1.50
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 (4 from 7,865 patents)
4 patents:
1. 5043197 - Method for making biaxially-oriented polyester film having a dual-sided
2. 4990401 - Biaxially-oriented polyester film having a dual-sided appearance and
3. 4603073 - Opaque polyester film containing fine carbon black particles
4. 4546036 - Magnetic recording medium having opaque polyester film base