Average Co-Inventor Count = 3.43
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. Kabushiki Kaisha Toshiba (3 from 52,730 patents)
2. Tokyo Electric Co. (2 from 492 patents)
3. Tokyo Shibaura Denki Kabushiki Kaisha (1 from 2,916 patents)
4 patents:
1. D292289 - Electronic computer
2. D289097 - Electric vacuum cleaner
3. D288972 - Electric vacuum cleaner
4. D285923 - Arithmetic operation control machine for electronic computers