Publicação do pedido de patente
#3.1
04/12/1988
RPI 912
Application data
Number
PI8704181Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 04/12/1988. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
D. R. (pessoa física)
NL
R. L. (pessoa física)
GB
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
04/12/1988
RPI 912
#2.1
11/10/1987
RPI 890
#21.1
Patente extinta em 12/08/2002
07/29/2008
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05/26/1992
RPI 1121
#13.1
11/19/1991
RPI 1094
#9.1
07/23/1991
RPI 1077
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11/20/1990
RPI 1042
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