Solicitação de exame técnico
#4.1
06/30/1987
RPI 871
Application data
Number
PI8405409Type
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: 06/30/1987. We update with every new RPI gazette, published weekly.
Applicants
Institut Français du Petrole
FR
Inventors
J. C. (pessoa física)
FR
J. B. (pessoa física)
FR
IPC Classification
Priority claims
FR
83/16.943 · 10/25/1983
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
06/30/1987
RPI 871
#3.1
09/03/1985
RPI 776
#2.1
01/08/1985
RPI 742
#21.1
Patente extinta em 24/10/99
07/08/2008
RPI 1957
#16.1
02/18/1992
RPI 1107
#13.1
11/12/1991
RPI 1093
#9.1
07/16/1991
RPI 1076
#6.1
01/08/1991
RPI 1049
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.