Average Co-Inventor Count = 2.40
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. Alcan International Limited (1 from 495 patents)
2. Teleco Oilfield Services Inc. (1 from 60 patents)
2 patents:
1. 4894923 - Method and apparatus for measurement of azimuth of a borehole while
2. 4813274 - Method for measurement of azimuth of a borehole while drilling