Average Co-Inventor Count = 1.71
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. Taisei Kako Co., Ltd. (3 from 82 patents)
2. Seikagaku Corporation (1 from 191 patents)
3 patents:
1. D1037440 - Syringe
2. D1023298 - Syringe
3. 11357930 - Syringe opening confirmation structure