Concessão da patente
#16.1
09/26/1989
RPI 988
Application data
Number
PI8501880Type
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: 09/26/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
D. D. (pessoa física)
BR
E. W. (pessoa física)
BR
O. S. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/26/1989
RPI 988
#13.1
07/18/1989
RPI 978
#9.1
03/28/1989
RPI 962
#4.1
02/03/1987
RPI 850
#3.1
11/25/1986
RPI 840
#2.1
06/03/1986
RPI 815
#21.1
Patente extinta em 19/04/2000
07/15/2008
RPI 1958
From the same holder
Same category
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