Average Co-Inventor Count = 2.00
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. Other (1 from 832,966 patents)
2. Shell Oil Comapny (1 from 7,646 patents)
3. Keystone International (1 from 49 patents)
4. Marine Contractor Services, Inc. (1 from 2 patents)
5. Hunting Mcs, Inc. (1 from 1 patent)
5 patents:
1. 6467545 - Monolithic isolation stress joint
2. 6189647 - Anti-theft steering wheel for vehicles
3. 5437340 - Millout whipstock apparatus and method
4. 5163783 - Apparatus for leveling subsea structures
5. 4862910 - Check valve with disc centering device