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. Halliburton Company (2 from 1,479 patents)
2 patents:
1. 4902170 - Grouting method - chemical method
2. 4249576 - Retrievable plug for offshore platforms having shear type retaining means