Concessão da patente
#16.1
07/25/1989
RPI 979
The letters patent expired on 10/03/1995: 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: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Companhia Siderúrgica Nacional - Grupo Siderbrás
RJ, BR
Inventors
J. M. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
07/25/1989
RPI 979
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01/24/1989
RPI 953
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04/19/1988
RPI 913
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08/04/1987
RPI 876
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02/24/1987
RPI 853
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10/01/1985
RPI 780
#21.1
10/03/1995
RPI 1296
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