Solicitação de exame técnico
#4.1
05/09/1989
RPI 968
Application data
Number
PI8504432Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 05/09/1989. We update with every new RPI gazette, published weekly.
Applicants
Usinas Siderurgicas de Minas Gerais S/A - USIMINAS (Grupo Siderbrás)
MG, BR
Inventors
K. M. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
05/09/1989
RPI 968
01/31/1989
RPI 954
#4.2
08/09/1988
RPI 929
#3.1
04/14/1987
RPI 860
#2.1
11/19/1985
RPI 787
#15.11
Procedimento automático de reclassificação. As classificações IPC anteriores eram: G05B 13/02; B21B 37/06.
03/27/2018
RPI 2464
#21.1
Patente extinta em 13/09/2000
07/15/2008
RPI 1958
#16.1
02/13/1991
RPI 1054
#13.1
10/09/1990
RPI 1036
#9.1
06/26/1990
RPI 1024
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.