Average Co-Inventor Count = 4.00
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. Dai Nippon Toryo Co., Ltd. (2 from 116 patents)
2. Matsushita Electric Industrial Co., Ltd. (1 from 27,375 patents)
2 patents:
1. 4279653 - Ink composition for ink jet recording
2. 4153467 - Method of ink jet printing