Concessão da patente
#16.1
06/28/1988
RPI 923
The letters patent expired on 12/07/1993: 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: 06/28/1988. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
C. M. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/28/1988
RPI 923
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02/09/1988
RPI 903
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RPI 885
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04/14/1987
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10/01/1985
RPI 780
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RPI 760
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12/07/1993
RPI 1201
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05/29/1990
RPI 1020
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