Average Co-Inventor Count = 2.79
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. Northern Technologies International Corporation (7 from 25 patents)
2. Nothern Technologies International Corporation (1 from 1 patent)
3. Petroleo Brasileiro S.a. (37 patents)
8 patents:
1. 9556635 - Storage tank bottom corrosion protection system
2. 9303380 - Systems for corrosion protection of storage tank soil side bottoms
3. 9169720 - Corrosion management systems for vertically oriented structures
4. 9121539 - Corrosion management systems for controlling. eliminating and/or managing corrosion
5. 8418757 - Corrosion management systems for vertically oriented structures
6. 8354072 - Corrosion management systems for controlling, eliminating and/or managing corrosion
7. 8309021 - Corrosion management systems for controlling, eliminating and/or managing corrosion
8. 8071200 - Rust-resistant tape