Pedido de patente depositado
#2.1
07/18/1989
RPI 978
Application data
Number
PI8902686Type
Filing
Publication
The letters patent expired on 12/22/2009: 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: 07/18/1989. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
R. S. (pessoa física)
GB
T. G. (pessoa física)
GB
IPC Classification
Priority claims
GB
8814881.2 · 06/22/1988
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
07/18/1989
RPI 978
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Patente extinta em 07/06/2004
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