Average Co-Inventor Count = 2.00
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. International Business Machines Corporation (2 from 164,219 patents)
2 patents:
1. 4495554 - Isolated power supply feedback
2. 4417824 - Optical keyboard with common light transmission members