Deferimento
#9.1
11/28/1989
RPI 997
Application data
Number
PI8404755Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
A. B. (pessoa física)
BR
R. V. (pessoa física)
BR
R. O. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#9.1
11/28/1989
RPI 997
#6.1
08/29/1989
RPI 984
#4.1
08/12/1986
RPI 825
#3.1
04/29/1986
RPI 810
#2.1
12/04/1984
RPI 737
#21.1
Patente extinta em 21/09/99
07/08/2008
RPI 1957
#16.1
08/28/1990
RPI 1030
#13.1
04/03/1990
RPI 1012
From the same holder
Same category
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