Average Co-Inventor Count = 2.33
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. Toyota Jidosha Kabushiki Kaisha (3 from 36,653 patents)
2. Chuo Spring Co., Ltd. (1 from 3 patents)
3 patents:
1. 4655189 - Device for processing fuel vapor
2. 4500099 - Elastic supporting and sealing member with thermal foaming strip
3. 4448754 - Monolithic catalyst catalytic converter with catalyst holding expansible