Petroleo Brasileiro SA - Company Profile
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View up-to-date information on Petroleo Brasileiro SA patents, including inventor and filing insights.
Patent Trends
| Publication Identifier | Document Type | Title | Classification-CPC | Publication Date |
|---|---|---|---|---|
| US20230391643A1 | Application | Method of treatment of water produced by chemical flocculation using anionic surfactant and cationic polyelectrolyte and use of the same | C02F1/24; C02F1/547; C02F1/56; C02F2101/32 | December 07, 2023 |
| US20230392883A1 | Application | Device to repair leakage in high pressure shell-and-tubes heat exchanger using gasket and tensioning by cases | F28F11/00; F28F2230/00 | December 07, 2023 |
| US11834927B2 | Grant | Method for preventing saline scale in low-activity, aqueous-phase reservoir wells and its use | E21B37/06; E21B41/02 | December 05, 2023 |
| US20230381873A1 | Application | Automated orbital machine for cutting and drawing the pipe preservation system | B23D21/04; F16L58/1063 | November 30, 2023 |
| US11826745B2 | Grant | Method of maintaining the activity of pre-reform catalysts | B01J23/755; B01J38/52; B01J38/62 | November 28, 2023 |
Top Inventors by Filings (Count by publication)
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