Average Co-Inventor Count = 1.50
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. Petroleo Brasileiro S.a. - Petrobras (4 from 433 patents)
4 patents:
1. 6139644 - Method and equipment for launching pigs into undersea pipes
2. 6129150 - Method and equipment for offshore oil production by intermittent gas
3. 6092603 - Method and equipment for the flow of offshore oil production with
4. 6079498 - Method and equipment for the flow of offshore oil production