Average Co-Inventor Count = 5.00
ph-index = 3
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 Topcon (2 from 1,033 patents)
2. Mitsui Co., Ltd. (2 from 37 patents)
3. Other (1 from 832,912 patents)
3 patents:
1. 6882305 - Method and apparatus for determining position
2. 6865484 - Satellite position measurement system
3. 6791492 - GPS positioning system