Average Co-Inventor Count = 2.25
ph-index = 2
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. 5028305 - Process for producing magneto-optic recording medium
2. 4950556 - Magneto-optic recording medium
3. 4556893 - Optical recording medium of high sensitivity