Average Co-Inventor Count = 3.60
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. Drillflex (3 from 6 patents)
3 patents:
1. 5718288 - Method of cementing deformable casing inside a borehole or a conduit
2. 5695008 - Preform or matrix tubular structure for casing a well
3. 5494106 - Method for sealing between a lining and borehole, casing or pipeline