Concessão da patente
#16.1
05/31/1988
RPI 919
The letters patent expired on 12/14/1993: 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: 05/31/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
J. B. (pessoa física)
R. K. (pessoa física)
GB
IPC Classification
Priority claims
GB
33524/77 · 08/10/1977
Publications in the Brazilian Industrial Property Gazette (RPI).
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Procedimento automático de reclassificação. As classificações IPC anteriores eram: A01N 9/02; C07C 69/02; C07C 69/74; C07C 69/76.
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