Concessão da patente
#16.1
10/27/1987
RPI 888
Application data
Number
PI8204215Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 10/27/1987. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
R. S. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
10/27/1987
RPI 888
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09/22/1987
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05/05/1987
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06/03/1986
RPI 815
#4.1
08/20/1985
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#3.1
07/12/1983
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#2.1
08/31/1982
RPI 619
#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era C07C 121/48.
03/27/2018
RPI 2464
#21.1
Patente extinta em 20/07/97
07/01/2008
RPI 1956
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