Solicitação de exame técnico
#4.1
07/26/1988
RPI 927
Application data
Number
PI8505958Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 07/26/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
D. M. (pessoa física)
GB
R. B. (pessoa física)
R. S. (pessoa física)
GB
IPC Classification
Priority claims
GB
8430321 · 11/30/1984
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