Solicitação de exame técnico
#4.1
10/18/1988
RPI 939
Application data
Number
PI8606465Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 10/18/1988. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileira S/A - Petrobrás
RJ, BR
Inventors
F. F. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/18/1988
RPI 939
#3.1
07/12/1988
RPI 925
#2.1
04/28/1987
RPI 862
#21.1
Patente extinta em 29/12/2001
07/22/2008
RPI 1959
#16.1
02/26/1991
RPI 1056
#13.1
11/13/1990
RPI 1041
#9.1
07/31/1990
RPI 1026
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