Concessão da patente
#16.1
11/29/1983
RPI 684
The letters patent expired on 07/20/1993: 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: 11/29/1983. We update with every new RPI gazette, published weekly.
Applicants
PETROLEO BRASILEIRO SA
Inventors
C. N. (pessoa física)
D. P. (pessoa física)
F. A. (pessoa física)
V. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/29/1983
RPI 684
#13.1
08/02/1983
RPI 667
#9.1
03/22/1983
RPI 648
#4.1
06/29/1982
RPI 610
02/09/1982
RPI 590
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
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