Average Co-Inventor Count = 5.00
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. Canon Kabushiki Kaisha (1 from 90,594 patents)
2. Tohoku Steel Co., Ltd. (1 from 5 patents)
1 patent:
1. 4833044 - Film type magnetic recording medium