Average Co-Inventor Count = 8.00
ph-index = 1
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 Printing Co., Ltd. (1 from 3,192 patents)
2. Japan Tobacco Inc. (1 from 1,037 patents)
1 patent:
1. 4865056 - Easily breakable plastic capsule and a water filter for a cigarette