15.15
10/31/1989
RPI 993
Application data
Number
PI8704858Type
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: 10/31/1989. We update with every new RPI gazette, published weekly.
Applicants
COPENE - Petroquímica do Nordeste S/A
BA, BR
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
E. A. (pessoa física)
BR
R. R. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
10/31/1989
RPI 993
#4.2
10/31/1989
RPI 993
#3.1
04/18/1989
RPI 965
#2.1
12/01/1987
RPI 893
#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era C01B 33/34.
03/27/2018
RPI 2464
#21.1
Patente extinta em 22/09/2002
07/29/2008
RPI 1960
#16.1
05/30/1995
RPI 1278
#13.1
11/29/1994
RPI 1252
#9.1
08/02/1994
RPI 1235
#6.1
02/25/1992
RPI 1108
#4.1
02/01/1990
RPI 1004
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Same category
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