Average Co-Inventor Count = 4.44
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. Dainippon Ink and Chemicals, Incorporated (2 from 630 patents)
2 patents:
1. 4402887 - Sheet-like articles of polyvinyl chloride
2. 4278728 - Embossed interior finishing materials having excellent cigarette mark