Average Co-Inventor Count = 2.67
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. Mearthane Products Corporation (4 from 17 patents)
4 patents:
1. 6260861 - Variable traction wheel for in-line roller skate
2. 5967552 - In-line wheeled skate
3. 5836591 - In-line wheeled skate for extreme skating
4. 5829757 - Variable traction wheel for in-line roller skate