Average Co-Inventor Count = 5.87
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. Other (2 from 832,891 patents)
2. Nippon Kayaku Kabushiki Kaisha (2 from 775 patents)
3. Japan Science and Technology Corporation (1 from 373 patents)
4. Sakurai, Yasuhisa (0 patent)
2 patents:
1. 7138490 - Block copolymer reduced in impurity content, polymeric carrier, pharmaceutical preparations in polymeric form and process for the preparation of the same
2. 6080396 - Anthracycline compound derivative and pharmaceutical preparation