Average Co-Inventor Count = 1.25
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. Progress Rail Services Corporation (5 from 119 patents)
2. Amsted Rail Company, Inc. (3 from 139 patents)
3. Progress Rail a Caterpillar Company (1 from 1 patent)
4. Amsted Rps (1 from 1 patent)
10 patents:
1. 11732423 - Spring anchor assembly for track rail and spring anchor insulator for same
2. 11396729 - Direct fixation fastener having interlocking eccentrics for lateral adjustment
3. 11098454 - Track rail fastener and system for pedestal mounted track rail
4. 10428468 - Track-mounting assembly
5. 10240299 - Mechanism and system for fastening track rail to a substrate and track rail fastening method
6. 10081915 - Track rail fastening mechanism and method
7. 9708776 - Track-mounting assembly
8. 8944340 - Adjuster for track-mounting assembly
9. 8919660 - End restraint for turnout
10. D712241 - Bolt anchor for concrete