Average Co-Inventor Count = 1.60
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 (4 from 52,722 patents)
4 patents:
1. D337781 - Laser beam printer
2. D319442 - Telephone
3. D312458 - Combined radio/telephone set
4. D306730 - Telephone