Concessão da patente
#16.1
05/30/1989
RPI 971
Application data
Number
PI8203397Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
A. S. (pessoa física)
BR
L. C. (pessoa física)
BR
P. J. (pessoa física)
BR
P. F. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
05/30/1989
RPI 971
#13.1
12/27/1988
RPI 949
#9.1
09/06/1988
RPI 933
#6.1
03/15/1988
RPI 908
#6.1
06/23/1987
RPI 870
#4.1
02/26/1985
RPI 749
#3.1
01/17/1984
RPI 691
#2.1
07/27/1982
RPI 614
#21.1
Patente extinta em 09/06/97
07/01/2008
RPI 1956
From the same holder
Same category
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