Average Co-Inventor Count = 2.29
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. Sugatsune Kogyo Co., Ltd. (4 from 228 patents)
2. Nintendo Co., Ltd. (1 from 2,810 patents)
3. Pkm Corporation (1 from 1 patent)
4 patents:
1. 10626645 - Hinge device
2. 8730658 - Portable device
3. 8032987 - Portable device and hinge assembly
4. 7681283 - Hinge assembly