Concessão da patente
#16.1
09/26/1989
RPI 988
Application data
Number
PI8406754Type
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: 09/26/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
E. N. (pessoa física)
BR
S. F. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/26/1989
RPI 988
#13.1
02/21/1989
RPI 957
#15.11
11/22/1988
RPI 944
#9.1
11/01/1988
RPI 941
#4.1
09/23/1986
RPI 831
#3.1
07/08/1986
RPI 820
#2.1
03/18/1986
RPI 804
#21.1
Patente extinta em 28/12/99
07/08/2008
RPI 1957
From the same holder
Same category
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