Average Co-Inventor Count = 4.20
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. Seiko Epson Corporation (2 from 33,418 patents)
2. Cosmo System Corporation (1 from 1 patent)
2 patents:
1. 5581180 - Horizontal and vertical displacement detector of wire rope
2. 5545983 - Displacement sensor with temperature compensation by combining outputs