Concessão da patente
#16.1
12/30/1986
RPI 845
The letters patent expired on 04/25/1995: 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: 12/30/1986. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
C. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
12/30/1986
RPI 845
#13.1
09/02/1986
RPI 828
#9.1
04/29/1986
RPI 810
12/31/1985
RPI 793
#6.1
07/02/1985
RPI 767
#6.1
02/20/1985
RPI 748
05/22/1984
RPI 709
#6.1
02/28/1984
RPI 697
#21.1
04/25/1995
RPI 1273
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Same category
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