Solicitação de exame técnico
#4.1
05/16/1989
RPI 969
The letters patent expired on 07/01/2008: 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: 05/16/1989. We update with every new RPI gazette, published weekly.
Applicants
Britanite S/A Indústrias Químicas
PR, BR
Inventors
F. T. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/16/1989
RPI 969
#3.1
06/28/1988
RPI 923
#2.1
05/05/1987
RPI 863
#21.1
Patente extinta em 21/11/1996
07/01/2008
RPI 1956
#16.1
06/25/1991
RPI 1073
03/05/1991
RPI 1057
#13.1
01/22/1991
RPI 1051
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10/09/1990
RPI 1036
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