Concessão da patente
#16.1
03/27/1984
RPI 701
The letters patent expired on 11/30/1993: 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: 03/27/1984. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
J. S. (pessoa física)
NL
IPC Classification
Priority claims
GB
30470/77 · 07/20/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
03/27/1984
RPI 701
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12/20/1983
RPI 687
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08/30/1983
RPI 671
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02/16/1983
RPI 643
11/10/1981
RPI 577
#21.1
11/30/1993
RPI 1200
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