Solicitação de exame técnico
#4.1
09/20/1988
RPI 935
Application data
Number
PI8606466Type
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
C. R. (pessoa física)
BR
J. D. (pessoa física)
BR
J. A. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
09/20/1988
RPI 935
#3.1
07/12/1988
RPI 925
#2.1
04/28/1987
RPI 862
#21.1
Patente extinta em 29/12/2001
07/22/2008
RPI 1959
#16.1
08/30/1994
RPI 1239
#13.1
04/12/1994
RPI 1219
#9.1
11/23/1993
RPI 1199
#6.1
05/18/1993
RPI 1172
From the same holder
Same category
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