Average Co-Inventor Count = 2.88
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. Washi Kosan Co., Ltd. (5 from 11 patents)
2. Hitachi, Ltd. (1 from 42,485 patents)
3. Nippon Mayer Co., Ltd. (1 from 8 patents)
6 patents:
1. 7702573 - Debt reduction method and device thereof
2. 6183081 - Kit providing independent right and left eyeglass lenses with side frames and method for assembly thereof
3. 6075652 - Convex-microgranular surface structure
4. 5709922 - Transparent article and process for producing the same
5. 5675993 - Patterning method and device in warp knitting machine
6. 4978101 - Solenoid controlled valve ofr liquid preparation