Solicitação de exame técnico
#4.1
05/09/1989
RPI 968
The letters patent expired on 10/03/1995: 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 - USIMINAS (Grupo Siderbrás)
MG, BR
Inventors
M. 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
#3.1
02/10/1987
RPI 851
#2.1
09/03/1985
RPI 776
#21.1
10/03/1995
RPI 1296
#16.1
06/25/1991
RPI 1073
#13.1
02/26/1991
RPI 1056
#9.1
11/13/1990
RPI 1041
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.