Solicitação de exame técnico
#4.1
09/20/1988
RPI 935
Application data
Number
PI8605010Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 09/20/1988. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais S/A - Usiminas
MG, BR
Inventors
A. S. (pessoa física)
BR
D. S. (pessoa física)
BR
J. A. (pessoa física)
BR
J. L. (pessoa física)
BR
J. B. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
09/20/1988
RPI 935
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05/31/1988
RPI 919
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04/07/1987
RPI 859
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Patente extinta em 14/10/2001
07/22/2008
RPI 1959
#16.1
07/25/1995
RPI 1286
#13.1
04/04/1995
RPI 1270
#9.1
11/29/1994
RPI 1252
#6.1
06/07/1994
RPI 1227
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