Average Co-Inventor Count = 2.10
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. Cleveland Track Material, Inc. (7 from 21 patents)
7 patents:
1. 8870128 - Flange bearing frog crossing
2. 8870129 - Flange bearing frog crossing
3. 8720793 - Movable bridge joint guard arrangement with replaceable guard plate insert
4. 8424812 - Elevated frog and rail track assembly
5. 8424813 - Elevated frog and rail track assembly
6. D679427 - Flange bearing frog crossing extension casting
7. D679032 - Flange bearing frog crossing intersection casting