Solicitação de exame técnico
#4.1
05/30/1989
RPI 971
Application data
Number
PI8703386Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
Petróleo Brasileiro S/A - Petrobrás
RJ, BR
Inventors
J. R. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/30/1989
RPI 971
#3.1
01/17/1989
RPI 952
#2.1
09/29/1987
RPI 884
#21.1
Patente extinta em 03/07/2002
07/29/2008
RPI 1960
#16.1
03/31/1992
RPI 1113
#13.1
09/10/1991
RPI 1084
#9.1
05/28/1991
RPI 1069
#7.1
12/26/1990
RPI 1047
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.