Average Co-Inventor Count = 1.39
ph-index = 4
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. Johnstown America Corporation (5 from 15 patents)
2. Bethlehem Steel Corporation (2 from 370 patents)
3. Jac Patent Company (1 from 10 patents)
8 patents:
1. 6330863 - Railroad car tub
2. 6227123 - Railroad car pick-up shoe
3. 5727475 - Side stake for rotary dump rail car
4. 5676266 - Dual air line arrangement for rotary/bottom dump coal car
5. 5253593 - Tub/center sill attachment for gondola car
6. 5216958 - Brake arrangement for a railroad gondola car with tie rod running inside
7. 5070793 - Top chord member for railway cars
8. 5058509 - Railway car with vented bolster to facilitate the thawing of lading