Concessão da patente
#16.1
07/25/1989
RPI 979
Application data
Number
PI8400328Type
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: 07/25/1989. We update with every new RPI gazette, published weekly.
Applicants
Companhia Siderurgica Nacional - CSN
RJ, BR
Companhia Siderúrgica Nacional - Grupo Siderbrás
RJ, BR
Inventors
B. M. (pessoa física)
B. M. (pessoa física)
D. A. (pessoa física)
F. F. (pessoa física)
L. E. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
07/25/1989
RPI 979
#13.1
11/29/1988
RPI 945
#9.1
08/02/1988
RPI 928
#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
From the same holder
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.