Exigência - art. 36 da LPI
#6.1
08/08/1989
RPI 981
Application data
Number
PI8400327Type
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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
D. F. (pessoa física)
BR
L. S. (pessoa física)
BR
S. B. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#6.1
08/08/1989
RPI 981
#6.1
12/27/1988
RPI 949
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02/25/1986
RPI 801
#3.1
09/03/1985
RPI 776
#2.1
04/10/1984
RPI 703
#21.1
Patente extinta em 26/01/99
07/08/2008
RPI 1957
#16.1
05/28/1991
RPI 1069
#13.1
02/05/1991
RPI 1053
#9.1
10/23/1990
RPI 1038
#6.1
03/13/1990
RPI 1009
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