Publicação do pedido de patente
#3.1
01/03/1989
RPI 950
Application data
Number
PI8802830Type
Filing
Publication
The letters patent expired on 09/02/2008: 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: 01/03/1989. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
J. C. (pessoa física)
DE
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
01/03/1989
RPI 950
#2.1
11/01/1988
RPI 941
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 103/58; C07C 147/00; C07D 295/18.
03/27/2018
RPI 2464
#21.1
Patente extinta em 09/06/2003
09/02/2008
RPI 1965
#16.1
03/25/1997
RPI 1373
#9.1
03/26/1996
RPI 1321
#6.1
02/07/1995
RPI 1262
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03/05/1991
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