Average Co-Inventor Count = 4.00
ph-index = 3
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. Portec Rail Products, Inc. (3 from 29 patents)
3 patents:
1. 6422479 - Gauge plate and switch rod insulators
2. 6305614 - Gauge plate and switch rod insulators
3. 6170756 - Gauge plate and switch rod insulators