20.7
06/06/1989
RPI 972
The letters patent expired on 10/04/1994: 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: 06/06/1989. We update with every new RPI gazette, published weekly.
Applicants
ALCAN BRASIL [BR]
Inventors
C. F. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
06/06/1989
RPI 972
#16.1
08/30/1988
RPI 932
#13.1
06/07/1988
RPI 920
#9.2
06/07/1988
RPI 920
#9.1
02/09/1988
RPI 903
#6.1
07/21/1987
RPI 874
#4.1
08/05/1986
RPI 824
#3.1
10/01/1985
RPI 780
#2.1
05/08/1984
RPI 707
#21.1
10/04/1994
RPI 1244
From the same holder
Same category
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