Average Co-Inventor Count = 2.22
ph-index = 3
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. Mitsubishi Pencil Company, Limited (6 from 384 patents)
2. Terumo Kabushiki Kaisha (1 from 2,328 patents)
6 patents:
1. 10299561 - Makeup tool
2. 9924777 - Liquid substance advancing container
3. 9782199 - Puncture device
4. 8292530 - Knock type writing instrument
5. 7938592 - Writing implement
6. 7931415 - Knock-type writing instrument having a shock-relaxing device