Average Co-Inventor Count = 1.00
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. Greenville Steel Car Co. (4 from 5 patents)
4 patents:
1. 4688490 - Rail car door bottom guide rail having tire-actuated, depressible
2. 4686909 - Rail car bridge plate securement assembly with rotating leaf
3. 4649831 - Rail car with space allowing for opening of end enclosure
4. 4646652 - Railroad car door bottom guide system