Average Co-Inventor Count = 6.91
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. Matsushita Electric Works, Ltd. (3 from 1,623 patents)
3 patents:
1. 7157138 - Fiber board
2. 7045027 - Method of producing a fiber board
3. 5304415 - Sound absorptive material