20.7
07/28/1987
RPI 875
The letters patent expired on 11/15/1994: 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: 07/28/1987. We update with every new RPI gazette, published weekly.
Applicants
METALURGICA UDINESE LTDA [BR]
Inventors
P. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/28/1987
RPI 875
03/31/1987
RPI 858
#16.1
10/29/1986
RPI 836
#13.1
07/08/1986
RPI 820
03/25/1986
RPI 805
#12.1
07/23/1985
RPI 770
#9.1
05/07/1985
RPI 759
#6.1
01/15/1985
RPI 743
#5.1
05/22/1984
RPI 709
#4.1
01/03/1984
RPI 689
#3.1
11/01/1983
RPI 680
#2.1
05/11/1982
RPI 603
#21.1
11/15/1994
RPI 1250
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Same category
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