Average Co-Inventor Count = 2.73
ph-index = 5
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. Casio Computer Co., Ltd. (5 from 5,229 patents)
2. Oki Electric Industry Co., Ltd. (1 from 4,979 patents)
5 patents:
1. 6847066 - Semiconductor device
2. 4510485 - Sound generating device for jogger
3. 4405241 - Electronic device having timepiece function
4. 4391530 - Electronic timepiece
5. 4368988 - Electronic timepiece having recording function