Concessão da patente
#16.1
11/28/1989
RPI 997
Application data
Number
PI8403283Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
E. M. (pessoa física)
BR
J. S. (pessoa física)
BR
M. M. (pessoa física)
BR
R. N. (pessoa física)
BR
S. D. (pessoa física)
BR
V. C. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/28/1989
RPI 997
#13.1
08/22/1989
RPI 983
#9.1
04/25/1989
RPI 966
#6.1
11/22/1988
RPI 944
#4.1
08/26/1986
RPI 827
#3.1
02/12/1986
RPI 799
#2.1
09/04/1984
RPI 724
#21.1
Patente extinta em 03/07/99
07/08/2008
RPI 1957
From the same holder
Same category
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