Concessão da patente
#16.1
10/24/1989
RPI 992
The letters patent expired on 10/04/1994: 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: 10/24/1989. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderúrgicas de Minas Gerais - USIMINAS (Grupo Siderbrás)
MG, BR
Inventors
J. B. (pessoa física)
BR
J. A. (pessoa física)
BR
J. S. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
10/24/1989
RPI 992
#13.1
07/18/1989
RPI 978
#9.1
03/28/1989
RPI 962
#6.1
10/18/1988
RPI 939
#4.1
02/17/1988
RPI 904
#3.1
01/28/1986
RPI 797
#2.1
08/21/1984
RPI 722
#21.1
10/04/1994
RPI 1244
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