Average Co-Inventor Count = 1.29
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. Keystone Industries, Inc. (2 from 16 patents)
2. Other (1 from 832,812 patents)
3 patents:
1. 6047839 - Rail car buffer
2. 5927523 - Rail car buffer
3. 5908123 - Rail car buffer and method