Average Co-Inventor Count = 3.00
ph-index = 2
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. M&fc Holding Company (3 from 28 patents)
3 patents:
1. 5232201 - Plastic ball valve stem seal
2. 5169124 - Method for assembling a plastic ball valve
3. 5165658 - Plastic ball valve ball seal means