Concessão da patente
#16.1
06/25/1985
RPI 766
The letters patent expired on 09/12/1995: 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: 06/25/1985. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
K. P. (pessoa física)
V. P. (pessoa física)
IPC Classification
Priority claims
GB
7923143 · 07/03/1979
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/25/1985
RPI 766
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04/16/1985
RPI 756
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12/26/1984
RPI 740
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01/10/1984
RPI 690
#4.1
03/29/1983
RPI 649
#21.1
09/12/1995
RPI 1293
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