Average Co-Inventor Count = 3.91
ph-index = 3
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. Brother Kogyo Kabushiki-Kaisha (3 from 17,637 patents)
2. Intec Inc. (1 from 164 patents)
3. Xing Inc. (1 from 26 patents)
3 patents:
1. 5654690 - Fire alarm system
2. 4991135 - Electronic dictionary
3. 4747053 - Electronic dictionary