Average Co-Inventor Count = 1.50
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. Sony Corporation (1 from 58,132 patents)
2. Swift Instruments, Inc. (1 from 15 patents)
2 patents:
1. D440996 - Microscope
2. D251423 - Video tape recorder