Average Co-Inventor Count = 1.37
ph-index = 8
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. Amsted Industries Inc. (9 from 317 patents)
9 patents:
1. 5246135 - Limited slack railcar connector having elastic space member
2. 5001989 - Single axle suspension system for railway car truck
3. 4892324 - Fifth wheel mounting pad
4. 4870914 - Diagonally braced railway truck
5. 4871182 - Fifth wheel unlocking and safety latch device
6. 4336758 - Railroad car sill-articulating device member connection
7. 4322981 - Railway car truck fatigue detector
8. 4186914 - Dual rate spring device for railroad car trucks
9. 4103623 - Squaring frictionally snubbed railway car truck