Average Co-Inventor Count = 1.92
ph-index = 4
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. Toppan Printing Co., Ltd. (3 from 1,268 patents)
2. Chikura Kogyo Kabushiki Kaisha (1 from 2 patents)
4 patents:
1. 5176300 - Pouring plug for liquid paper-containers
2. 5058360 - Filling and sealing apparatus for fluid containing package
3. 4501090 - Automatic door operator for swing doors
4. 4483464 - Container with a pouring spout