Average Co-Inventor Count = 4.90
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. The Pilot Ink Co., Ltd. (4 from 175 patents)
4 patents:
1. 5932992 - Method for energizing energization-operated toy element and
2. 5895718 - Thermoplastic resin compositions and temperature-dependent
3. 5716253 - Thermally color-changeable toy
4. 5316513 - Electrothermal color-varying device and toy utilizing the same