Pedido de patente depositado
#2.1
07/25/1989
RPI 979
Application data
Number
PI8803706Type
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: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais S/A-Usiminas
MG, BR
Inventors
R. S. (pessoa física)
BR
Y. S. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
07/25/1989
RPI 979
#21.1
Patente extinta em 26/07/2003
09/02/2008
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03/12/1996
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04/23/1991
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03/06/1990
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