Average Co-Inventor Count = 2.00
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. Air Products and Chemicals, Inc. (1 from 3,189 patents)
2. Nippon Nyukazai Co., Ltd. (1 from 9 patents)
1 patent:
1. 5668187 - Process for the preparation of rigid polyurethane foam