Publicação do pedido de patente
#3.1
11/07/1989
RPI 994
The letters patent expired on 09/25/2001: 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: 11/07/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
P. H. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
11/07/1989
RPI 994
#2.1
04/11/1989
RPI 964
#21.1
Patente extinta em 06/04/98 conforme disposto no artigo 24 da Lei 5772/71 (CPI).
09/25/2001
RPI 1603
#16.1
11/30/1993
RPI 1200
#13.1
09/21/1993
RPI 1190
#9.1
05/11/1993
RPI 1171
#4.1
08/21/1990
RPI 1029
From the same holder
Same category
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