Average Co-Inventor Count = 4.00
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. Chisso Corporation (3 from 1,109 patents)
2. Toyoda Gosei Co., Ltd. (1 from 3,081 patents)
3. Daihatsu Motor Company, Ltd. (1 from 113 patents)
3 patents:
1. 5238989 - Polypropylene resin composition
2. 5133316 - Engine cylinder head cover and molding composition used therefor
3. 4613647 - Polypropylene compositions containing polyamides reinforced by glass