Pedido de patente depositado
#2.1
07/04/1989
RPI 976
Application data
Number
PI8902364Type
Filing
Publication
The letters patent expired on 12/26/2012: 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: 07/04/1989. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
R. R. (pessoa física)
US
IPC Classification
Priority claims
US
198,542 · 05/24/1988
Publications in the Brazilian Industrial Property Gazette (RPI).
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07/04/1989
RPI 976
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Patente extinta em 23/05/2009
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