Average Co-Inventor Count = 4.29
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. Nippon Polyurethane Industry Co., Ltd. (3 from 35 patents)
3 patents:
1. 5071887 - Polyurethane elastomer
2. 5066762 - Thermoplastic polyurethane resin from p-phenylene diisocyanate, a
3. 5021534 - Thermosetting urethane elastomer