Average Co-Inventor Count = 3.00
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. 3m Innovative Properties Company (2 from 14,084 patents)
2 patents:
1. 7884888 - Automatic darkening filter with offset polarizers
2. 7477330 - Automatic darkening filter with offset polarizers