Solicitação de exame técnico
#4.1
08/30/1988
RPI 932
Application data
Number
PI8507189Type
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: 08/30/1988. We update with every new RPI gazette, published weekly.
Applicants
U. C. (pessoa física)
US
Inventors
A. F. (pessoa física)
BE
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
08/30/1988
RPI 932
#1.3
07/14/1987
RPI 873
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: B01D 53/04; C01B 3/56; C01B 31/18; C01B 23/00.
03/27/2018
RPI 2464
#21.1
Patente extinta em 15/03/2000
07/15/2008
RPI 1958
#16.1
08/27/1991
RPI 1082
#13.1
05/14/1991
RPI 1067
#9.1
01/22/1991
RPI 1051
#6.1
06/19/1990
RPI 1023
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Same category
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