Pedido de patente depositado
#2.1
11/07/1989
RPI 994
Application data
Number
PI8805875Type
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: 11/07/1989. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais S/A - Usiminas
MG, BR
Inventors
A. A. (pessoa física)
BR
T. M. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#2.1
11/07/1989
RPI 994
#21.1
Patente extinta em 10/11/2003
09/02/2008
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05/25/1993
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08/11/1992
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07/30/1991
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