Solicitação de exame técnico
#4.1
10/04/1988
RPI 937
Application data
Number
PI8700106Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 10/04/1988. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais S/A - Usiminas
MG, BR
Inventors
I. C. (pessoa física)
BR
M. Q. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
10/04/1988
RPI 937
#3.1
08/02/1988
RPI 928
#2.1
05/12/1987
RPI 864
#21.1
Patente extinta em 13/01/2002
07/29/2008
RPI 1960
#16.1
07/25/1995
RPI 1286
#13.1
03/07/1995
RPI 1266
#9.1
11/01/1994
RPI 1248
#6.1
04/19/1994
RPI 1220
#6.1
09/08/1993
RPI 1188
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