Average Co-Inventor Count = 2.00
ph-index = 1
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. Pilkington Brothers P.l.c. (1 from 102 patents)
1 patent:
1. 4851471 - Process for manufacturing photochromic articles