Publicação do pedido de patente
#3.1
11/21/1989
RPI 996
Application data
Number
PI8802074Type
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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
C. C. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
11/21/1989
RPI 996
#2.1
06/13/1989
RPI 973
#21.1
Patente extinta em 29/04/2003
09/02/2008
RPI 1965
#16.1
04/27/1993
RPI 1169
#13.1
11/17/1992
RPI 1146
#15.11
08/11/1992
RPI 1132
#9.1
06/30/1992
RPI 1126
#4.1
08/14/1990
RPI 1028
From the same holder
Same category
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