Average Co-Inventor Count = 6.00
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. Nippondenso Co., Ltd. (1 from 3,252 patents)
2. Toyoda Boshoku Corporation (1 from 34 patents)
3. Toyoda Boshoku Corporation & Denso Corporation (1 from 1 patent)
2 patents:
1. 5851250 - Filter element for air cleaner
2. 5755844 - Resin-made air cleaner