Concessão da patente
#16.1
05/30/1989
RPI 971
The letters patent expired on 12/26/1995: 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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
A. L. (pessoa física)
P. N. (pessoa física)
IPC Classification
Priority claims
GB
794069 · 11/23/1979
Publications in the Brazilian Industrial Property Gazette (RPI).
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05/30/1989
RPI 971
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12/26/1995
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