Average Co-Inventor Count = 5.00
ph-index = 4
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. Petrolphysics Operators (4 from 4 patents)
2. Other (1 from 832,761 patents)
5 patents:
1. 5035285 - Gravel packing system for a production radial tube
2. 4974672 - Gravel packing system for a production radial tube
3. 4872509 - Oil well production system using a hollow tube liner
4. 4865128 - Gravel packing system for a production radial tube
5. 4750561 - Gravel packing system for a production radial tube