Solicitação de exame técnico
#4.1
11/21/1989
RPI 996
Application data
Number
PI8706596Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
J. R. (pessoa física)
BR
R. M. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
11/21/1989
RPI 996
#3.1
07/04/1989
RPI 976
#2.1
03/29/1988
RPI 910
#21.1
Patente extinta em 08/12/2002
07/29/2008
RPI 1960
#16.1
12/31/1996
RPI 1361
#13.1
06/18/1996
RPI 1333
#9.1
11/28/1995
RPI 1304
#6.1
02/21/1995
RPI 1264
From the same holder
Same category
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