Average Co-Inventor Count = 2.86
ph-index = 1
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. Other (1 from 832,891 patents)
2. Martin Marietta Corporation (1 from 490 patents)
2 patents:
1. D772699 - Corner protector
2. 5473122 - Dual-constrained viscoelastic damping mechanism for structural vibration