Average Co-Inventor Count = 4.28
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. Herzog Railroad Services, Inc. (7 from 24 patents)
2. Herzog Contracting Corporation (2 from 28 patents)
9 patents:
1. 12473696 - Rail tie distribution control system
2. 12454808 - Rotary ditching attachment for a tool manipulating arm
3. 12435475 - Rail tie distribution system
4. 11858541 - Articulated rail-transport car
5. 11548537 - Centering apparatus for hopper car doors
6. 11408131 - Track-lifting and ballast-spreading apparatus
7. 10160333 - Backup power system for railroad power units
8. 7707943 - Self-propelled rail unloading machine
9. 7152347 - Method and apparatus for applying railway ballast