Notificação para pagamento de retribuição
#13.1
12/05/1989
RPI 998
Application data
Number
PI8400325Type
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: 12/05/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderúrgica Nacional - CSN
RJ, BR
Inventors
E. P. (pessoa física)
BR
J. A. (pessoa física)
BR
L. N. (pessoa física)
BR
P. J. (pessoa física)
BR
P. A. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#13.1
12/05/1989
RPI 998
#9.1
08/08/1989
RPI 981
#6.1
03/07/1989
RPI 959
#4.1
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
03/20/1990
RPI 1010
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.