Solicitação de exame técnico
#4.1
05/09/1989
RPI 968
Application data
Number
PI8506357Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 05/09/1989. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais - USIMINAS (Grupo Siderbrás)
MG, BR
Inventors
J. F. (pessoa física)
BR
K. K. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/09/1989
RPI 968
01/31/1989
RPI 954
#4.2
08/09/1988
RPI 929
#3.1
07/07/1987
RPI 872
#2.1
03/04/1986
RPI 802
#21.1
Patente extinta em 18/12/2000
07/15/2008
RPI 1958
#16.1
11/27/1990
RPI 1043
#13.1
08/21/1990
RPI 1029
#9.1
04/24/1990
RPI 1015
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Same category
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