Concessão da patente
#16.1
10/25/1988
RPI 940
Application data
Number
PI8206171Type
Filing
Publication
The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 10/25/1988. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
D. S. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
10/25/1988
RPI 940
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07/26/1988
RPI 927
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05/31/1988
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04/12/1988
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RPI 723
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RPI 710
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12/14/1982
RPI 634
#21.1
Patente extinta em 22/10/97
07/01/2008
RPI 1956
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