Solicitação de exame técnico
#4.1
11/18/1986
RPI 839
Application data
Number
PI8500346Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 11/18/1986. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
C. P. (pessoa física)
BR
F. F. (pessoa física)
BR
H. R. (pessoa física)
BR
I. P. (pessoa física)
BR
J. F. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
11/18/1986
RPI 839
#3.1
09/09/1986
RPI 829
#2.1
07/02/1985
RPI 767
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C01G 49/06; C09K 7/02.
03/27/2018
RPI 2464
#21.1
Patente extinta em 25/01/2000
07/15/2008
RPI 1958
#22.1
11/28/1995
RPI 1304
#16.1
07/30/1991
RPI 1078
#13.1
04/09/1991
RPI 1062
#9.1
12/26/1990
RPI 1047
#6.1
07/24/1990
RPI 1025
#6.1
03/06/1990
RPI 1008
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Same category
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