Concessão da patente
#16.1
06/28/1988
RPI 923
Application data
Number
PI8200869Type
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: 06/28/1988. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Instituto de Pesquisas Tecnológicas de São Paulo S/A - IPT
SP, BR
Inventors
B. M. (pessoa física)
R. S. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
06/28/1988
RPI 923
#13.1
03/01/1988
RPI 906
#9.1
10/27/1987
RPI 888
#6.1
02/17/1987
RPI 852
#4.1
03/12/1985
RPI 751
#3.1
10/18/1983
RPI 678
#2.1
04/06/1982
RPI 598
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: C21D 9/46; C23C 1/02.
03/27/2018
RPI 2464
#21.1
Patente extinta em 17/02/97
07/01/2008
RPI 1956
09/22/1992
RPI 1138
From the same holder
Same category
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