Average Co-Inventor Count = 4.00
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. Kabushiki Kaisha Toshiba (2 from 52,730 patents)
2. Tokyo Electric Co. (2 from 492 patents)
2 patents:
1. D289097 - Electric vacuum cleaner
2. D288972 - Electric vacuum cleaner