Average Co-Inventor Count = 1.00
ph-index = 4
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. Kabushiki Kaisha Hattori Seiko (2 from 15 patents)
2. Parker Pen (benelux) B.v. (1 from 10 patents)
3. Kabushiki Kisha Hattori Seiko (1 from 1 patent)
4 patents:
1. D289304 - Ball point pen
2. D279273 - Wristwatch
3. D278687 - Wristwatch
4. D278688 - Wristwatch