Average Co-Inventor Count = 2.25
ph-index = 1
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. Spex Corporate Holdings Limited (4 from 18 patents)
2. Shell Oil Comapny (2 from 7,646 patents)
3. Shell Internationale Research Maatschappij, B.v. (154 patents)
4. Spex Group Holdings Limited (2 patents)
5. Spex Services Limited (0 patent)
6 patents:
1. 12312889 - Tool for manipulating a target with combustion products
2. 11674363 - Tool for manipulating a target
3. 11649688 - Tool for manipulating a target
4. 10156116 - Closure apparatus
5. 10138705 - Flow restriction device for well bore
6. 9932792 - Tool