Solicitação de exame técnico
#4.1
09/01/1987
RPI 880
Application data
Number
PI8401117Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 09/01/1987. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais S/A - USIMINAS
MG, BR
Inventors
J. P. (pessoa física)
BR
J. S. (pessoa física)
BR
T. A. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
09/01/1987
RPI 880
#3.1
10/15/1985
RPI 782
#2.1
05/29/1984
RPI 710
#21.1
Patente extinta em 12/03/99
07/08/2008
RPI 1957
#16.1
08/25/1992
RPI 1134
#13.1
02/11/1992
RPI 1106
10/01/1991
RPI 1087
#15.11
07/09/1991
RPI 1075
07/02/1991
RPI 1074
#9.1
02/13/1991
RPI 1054
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Same category
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