Average Co-Inventor Count = 17.01
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. Toyota Jidosha Kabushiki Kaisha (1 from 36,721 patents)
2. Nippon Soken, Inc. (1 from 1,600 patents)
1 patent:
1. 5582805 - Electrically heated catalytic apparatus