Solicitação de exame técnico
#4.1
07/14/1987
RPI 873
Application data
Number
PI8500001Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 07/14/1987. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
N. R. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
07/14/1987
RPI 873
#3.1
08/13/1985
RPI 773
#2.1
04/02/1985
RPI 754
#21.1
Patente extinta em 02/01/2000
07/15/2008
RPI 1958
#15.11
05/14/1991
RPI 1067
#16.1
12/26/1990
RPI 1047
#13.1
09/25/1990
RPI 1034
#9.1
06/12/1990
RPI 1022
#6.1
01/16/1990
RPI 1002
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.