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Walter Francisco Cardoso Junior
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Niteroi, BR
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Patents Grants
last 30 patents
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Patent Grant
Well conditioning method for wireline logging using dedicated aqueo...
Patent number
12,129,423
Issue date
Oct 29, 2024
Petroleo Brasileiro S.A. Petrobras
Angelo Marinho Vianna
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Patents Applications
last 30 patents
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Patent Application
METHOD OF APPLICATION OF LOW SALINITY VISCOUS FLUID IN DRILLING SAL...
Publication number
20230265726
Publication date
Aug 24, 2023
Petroleo Brasileiro S.A. - PETROBRAS
Angelo Marinho Vianna
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
WELL CONDITIONING METHOD FOR WIRELINE LOGGING USING DEDICATED AQUEO...
Publication number
20230104709
Publication date
Apr 6, 2023
Petroleo Brasileiro S.A. - PETROBRAS
Angelo Marinho Vianna
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...