Solicitação de exame técnico
#4.1
05/09/1989
RPI 968
The letters patent expired on 06/13/1995: 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 S/A - USIMINAS
MG, BR
Inventors
J. C. (pessoa física)
BR
L. S. (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
#15.6
12/22/1987
RPI 896
#15.3
09/08/1987
RPI 881
#3.1
07/08/1986
RPI 820
#2.1
03/26/1985
RPI 753
#21.1
06/13/1995
RPI 1280
#15.11
09/22/1992
RPI 1138
#16.1
03/26/1991
RPI 1060
#15.11
03/05/1991
RPI 1057
#13.1
12/26/1990
RPI 1047
#9.1
09/11/1990
RPI 1032
#6.1
02/13/1990
RPI 1006
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.