Average Co-Inventor Count = 3.00
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. Dai Nippon Insatsu Kabushiki Kaisha (3 from 412 patents)
3 patents:
1. 5069372 - Carton equipped with liquid pouring-out device
2. 5027979 - Carton equipped with liquid pouring-out device
3. 4948015 - Carton equipped with liquid pouring-out device