20.4
11/10/1987
RPI 890
The patent is in force and subject to a compulsory licence request: third parties have asked for authorisation to exploit the technology.
Protection valid until:07/06/1998
Latest action published by the INPI: 11/10/1987. We update with every new RPI gazette, published weekly.
Applicants
METALURGICA JACKWAL LTDA [BR]
Inventors
O. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
11/10/1987
RPI 890
#16.1
06/30/1987
RPI 871
#13.1
03/04/1987
RPI 854
#9.1
09/30/1986
RPI 832
#6.1
02/12/1986
RPI 799
#4.1
05/21/1985
RPI 761
#3.1
02/20/1985
RPI 748
#2.1
09/27/1983
RPI 675
#15.3
11/05/1991
RPI 1092
#16.2
09/03/1991
RPI 1083
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.