Average Co-Inventor Count = 2.67
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. Oak Industries, Inc. (2 from 90 patents)
2 patents:
1. 5465667 - Modular railway maintenance system
2. 5398616 - Automatic rail fastener applicator