Average Co-Inventor Count = 4.00
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. International Business Machines Corporation (1 from 164,221 patents)
1 patent:
1. 6219442 - Apparatus and method for measuring distortion of a visible pattern on a substrate by viewing predetermined portions thereof