Publicação do pedido de patente
#3.1
07/04/1989
RPI 976
Application data
Number
PI8706599Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 07/04/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
J. C. (pessoa física)
BR
R. L. (pessoa física)
BR
W. R. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
07/04/1989
RPI 976
#2.1
01/31/1989
RPI 954
#21.1
Patente extinta em 08/12/2002
07/29/2008
RPI 1960
#16.1
04/26/1994
RPI 1221
#13.1
10/26/1993
RPI 1195
#9.1
06/15/1993
RPI 1176
12/03/1991
RPI 1096
09/17/1991
RPI 1085
#4.1
07/24/1990
RPI 1025
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Same category
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