Concessão da patente
#16.1
11/25/1986
RPI 840
The letters patent expired on 04/18/1995: 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: 11/25/1986. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
D. G. (pessoa física)
D. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/25/1986
RPI 840
#13.1
07/08/1986
RPI 820
04/15/1986
RPI 808
08/27/1985
RPI 775
#12.1
06/28/1983
RPI 662
#9.1
03/08/1983
RPI 646
#21.1
04/18/1995
RPI 1272
From the same holder
Same category
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