Average Co-Inventor Count = 2.18
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. American Composite Materials Engineering, Inc. (3 from 3 patents)
2. American Composite Material Engineering, Inc. (1 from 1 patent)
4 patents:
1. 6761840 - Fiberglass railcar roof
2. 6615741 - Composite railcar containers and door
3. 6374546 - Fiberglass railcar roof
4. 5916093 - Composite fiberglass railcar roof